EP0637053A3 - Electron tube. - Google Patents

Electron tube. Download PDF

Info

Publication number: EP0637053A3
Authority: EP; European Patent Office
Prior art keywords: electron tube; electron; tube
Prior art date: 1993-07-30
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP94202160A

Other languages

German (de)

French (fr)

Other versions

EP0637053B1 (en

EP0637053A2 (en

Inventor

Heinz-Juergen C O Philip Jacob

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Philips Intellectual Property and Standards GmbH

Koninklijke Philips NV

Original Assignee

Philips Patentverwaltung GmbH

Philips Electronics NV

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1993-07-30

Filing date

1994-07-25

Publication date

1995-11-22

1994-07-25 Application filed by Philips Patentverwaltung GmbH, Philips Electronics NV filed Critical Philips Patentverwaltung GmbH

1995-02-01 Publication of EP0637053A2 publication Critical patent/EP0637053A2/en

1995-11-22 Publication of EP0637053A3 publication Critical patent/EP0637053A3/en

1999-02-10 Application granted granted Critical

1999-02-10 Publication of EP0637053B1 publication Critical patent/EP0637053B1/en

2014-07-25 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J35/00—X-ray tubes
- H01J35/02—Details
- H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
- H01J35/06—Cathodes
- H01J35/064—Details of the emitter, e.g. material or structure

EP94202160A 1993-07-30 1994-07-25 Electron tube Expired - Lifetime EP0637053B1 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE4325609		1993-07-30
DE4325609A DE4325609A1 (en)	1993-07-30	1993-07-30	Electron tube

Publications (3)

Publication Number	Publication Date
EP0637053A2 EP0637053A2 (en)	1995-02-01
EP0637053A3 true EP0637053A3 (en)	1995-11-22
EP0637053B1 EP0637053B1 (en)	1999-02-10

Family

ID=6494077

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP94202160A Expired - Lifetime EP0637053B1 (en)	1993-07-30	1994-07-25	Electron tube

Country Status (4)

Country	Link
US (1)	US5526396A (en)
EP (1)	EP0637053B1 (en)
JP (1)	JP3737530B2 (en)
DE (2)	DE4325609A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5920605A (en) *	1996-10-10	1999-07-06	General Electric Company	Cathode cup assembly for an x-ray tube
JP4334639B2 (en) *	1998-07-30	2009-09-30	浜松ホトニクス株式会社	X-ray tube
US6134300A (en) *	1998-11-05	2000-10-17	The Regents Of The University Of California	Miniature x-ray source
US6373922B1 (en)	2000-05-18	2002-04-16	General Electric Company	Method and apparatus for filament set height adjustment of a cathode cup assembly
US7209544B2 (en) *	2003-03-03	2007-04-24	Koninklijke Philips Electronics, N.V.	X-ray tube cathode assembly and interface reaction joining process
US7020244B1 (en) *	2004-12-17	2006-03-28	General Electric Company	Method and design for electrical stress mitigation in high voltage insulators in X-ray tubes
US7661445B2 (en) *	2005-12-19	2010-02-16	Varian Medical Systems, Inc.	Shielded cathode assembly
JP5543483B2 (en) *	2008-12-08	2014-07-09	コーニンクレッカフィリップスエヌヴェ	Electron source and cathode cup thereof
CN104488063B (en) *	2012-05-22	2017-06-09	皇家飞利浦有限公司	Cathode filament is assembled
RU2530533C1 (en) *	2013-02-21	2014-10-10	Иван Николаевич Столяров	Cathode of x-ray tube
DE102014209389B4 (en)	2014-05-17	2019-10-17	Incoatec Gmbh	Adjustment device for an electron emitter of an electron tube
JP2016173926A (en) *	2015-03-17	2016-09-29	東芝電子管デバイス株式会社	X-ray tube
JP7092664B2 (en)	2015-11-13	2022-06-28	コーニンクレッカフィリップスエヌヴェ	X-ray tube cathode
JP7197245B2 (en) *	2017-01-12	2022-12-27	キヤノン電子管デバイス株式会社	X-RAY TUBE AND METHOD FOR MANUFACTURING X-RAY TUBE

Citations (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2113422A (en) *	1931-06-12	1938-04-05	Gen Electric	Electron discharge device
US2123607A (en) *	1931-08-19	1938-07-12	James F Lee	Variable focus x-ray tube
GB490377A (en) *	1937-02-12	1938-08-12	Standard Telephones Cables Ltd	Improvements in or relating to x-ray tubes
US2130020A (en) *	1934-03-13	1938-09-13	Harry B Mceuen	Cathode filament control for x-ray tubes
US3631289A (en) *	1969-05-23	1971-12-28	Picker Corp	X-ray filament with balanced emission
JPS63105427A (en) *	1986-10-20	1988-05-10	Toshiba Corp	Manufacture of cathode structure for x-ray tube
EP0273162A2 (en) *	1986-12-31	1988-07-06	General Electric Company	Two-piece cathode cup

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5077777A (en) *	1990-07-02	1991-12-31	Micro Focus Imaging Corp.	Microfocus X-ray tube

1993
- 1993-07-30 DE DE4325609A patent/DE4325609A1/en not_active Withdrawn
1994
- 1994-07-08 US US08/267,210 patent/US5526396A/en not_active Expired - Lifetime
- 1994-07-25 DE DE59407791T patent/DE59407791D1/en not_active Expired - Fee Related
- 1994-07-25 EP EP94202160A patent/EP0637053B1/en not_active Expired - Lifetime
- 1994-07-26 JP JP17450194A patent/JP3737530B2/en not_active Expired - Fee Related

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2113422A (en) *	1931-06-12	1938-04-05	Gen Electric	Electron discharge device
US2123607A (en) *	1931-08-19	1938-07-12	James F Lee	Variable focus x-ray tube
US2130020A (en) *	1934-03-13	1938-09-13	Harry B Mceuen	Cathode filament control for x-ray tubes
GB490377A (en) *	1937-02-12	1938-08-12	Standard Telephones Cables Ltd	Improvements in or relating to x-ray tubes
US3631289A (en) *	1969-05-23	1971-12-28	Picker Corp	X-ray filament with balanced emission
JPS63105427A (en) *	1986-10-20	1988-05-10	Toshiba Corp	Manufacture of cathode structure for x-ray tube
EP0273162A2 (en) *	1986-12-31	1988-07-06	General Electric Company	Two-piece cathode cup

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 012, no. 348 (E - 659) 19 September 1988 (1988-09-19) *

Also Published As

Publication number	Publication date
US5526396A (en)	1996-06-11
EP0637053B1 (en)	1999-02-10
DE4325609A1 (en)	1995-02-02
DE59407791D1 (en)	1999-03-25
EP0637053A2 (en)	1995-02-01
JPH07176281A (en)	1995-07-14
JP3737530B2 (en)	2006-01-18

Legal Events

Date	Code	Title	Description
1994-12-16	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1995-02-01	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): DE FR GB NL
1995-10-02	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1995-11-22	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): DE FR GB NL
1996-07-17	17P	Request for examination filed	Effective date: 19960522
1997-04-09	17Q	First examination report despatched	Effective date: 19970224
1998-04-20	GRAG	Despatch of communication of intention to grant	Free format text: ORIGINAL CODE: EPIDOS AGRA
1998-08-04	GRAG	Despatch of communication of intention to grant	Free format text: ORIGINAL CODE: EPIDOS AGRA
1998-08-04	GRAH	Despatch of communication of intention to grant a patent	Free format text: ORIGINAL CODE: EPIDOS IGRA
1998-11-27	GRAH	Despatch of communication of intention to grant a patent	Free format text: ORIGINAL CODE: EPIDOS IGRA
1998-12-23	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1999-02-10	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): DE FR GB NL
1999-02-10	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19990210 Ref country code: FR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19990210
1999-03-25	REF	Corresponds to:	Ref document number: 59407791 Country of ref document: DE Date of ref document: 19990325
1999-05-12	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)	Effective date: 19990416
1999-07-01	NLV1	Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
1999-07-09	EN	Fr: translation not filed
1999-12-11	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1999-12-11	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
2000-01-12	RAP4	Party data changed (patent owner data changed or rights of a patent transferred)	Owner name: KONINKLIJKE PHILIPS ELECTRONICS N.V. Owner name: PHILIPS CORPORATE INTELLECTUAL PROPERTY GMBH
2000-01-26	26N	No opposition filed
2002-01-01	REG	Reference to a national code	Ref country code: GB Ref legal event code: IF02
2003-07-30	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 20030730 Year of fee payment: 10
2004-07-25	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040725
2005-03-16	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 20040725
2007-09-19	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 20070919 Year of fee payment: 14
2009-04-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090203

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