IT997765B - IMPROVEMENT IN PHOTOCROMIC OPHTHALMIC DEVICES - Google Patents

IMPROVEMENT IN PHOTOCROMIC OPHTHALMIC DEVICES

Info

Publication number: IT997765B
Authority: IT; Italy
Prior art keywords: photocromic; improvement; ophthalmic devices; ophthalmic; devices
Prior art date: 1972-12-01

Application number

IT53158/73A

Other languages

Italian (it)

Original Assignee

American Optical Corp

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.)

1972-12-01

Filing date

1973-10-16

Publication date

1975-12-30

1973-10-16 Application filed by American Optical Corp filed Critical American Optical Corp

1975-12-30 Application granted granted Critical

1975-12-30 Publication of IT997765B publication Critical patent/IT997765B/en

Links

Classifications

- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
- C08K5/3415—Five-membered rings
- C08K5/3417—Five-membered rings condensed with carbocyclic rings
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00634—Production of filters
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
- G02B1/041—Lenses
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/22—Absorbing filters
- G02B5/23—Photochromic filters
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/685—Compositions containing spiro-condensed pyran compounds or derivatives thereof, as photosensitive substances

Landscapes

Physics & Mathematics (AREA)
Chemical & Material Sciences (AREA)
Engineering & Computer Science (AREA)
General Physics & Mathematics (AREA)
Optics & Photonics (AREA)
Health & Medical Sciences (AREA)
Polymers & Plastics (AREA)
Medicinal Chemistry (AREA)
Chemical Kinetics & Catalysis (AREA)
Organic Chemistry (AREA)
Materials Engineering (AREA)
Manufacturing & Machinery (AREA)
Ophthalmology & Optometry (AREA)
Mechanical Engineering (AREA)
Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
Optical Filters (AREA)
Eyeglasses (AREA)

IT53158/73A 1972-12-01 1973-10-16 IMPROVEMENT IN PHOTOCROMIC OPHTHALMIC DEVICES IT997765B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US31118872A	1972-12-01	1972-12-01

Publications (1)

Publication Number	Publication Date
IT997765B true IT997765B (en)	1975-12-30

Family

ID=23205794

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT53158/73A IT997765B (en)	1972-12-01	1973-10-16	IMPROVEMENT IN PHOTOCROMIC OPHTHALMIC DEVICES

Country Status (11)

Country	Link
JP (1)	JPS4989551A (en)
AR (1)	AR198117A1 (en)
AT (1)	ATA897573A (en)
AU (1)	AU6133373A (en)
BR (1)	BR7309247D0 (en)
DE (1)	DE2347018A1 (en)
FR (1)	FR2211666A1 (en)
GB (1)	GB1418089A (en)
IL (1)	IL43211A0 (en)
IT (1)	IT997765B (en)
NL (1)	NL7316400A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5393246U (en) *	1976-12-28	1978-07-29
FR2415318A1 (en) *	1978-01-18	1979-08-17	Essilor Int	PROCESS FOR THE INTEGRATION OF A PHOTOCHROMIC SUBSTANCE INTO A BASE SUBSTRATE TRANSLUCENT IN ORGANIC MATTER, AND BASIC TRANSPARENT SUBSTRATE
JPS5582623U (en) *	1978-11-01	1980-06-07
US4286957A (en)	1979-01-10	1981-09-01	Essilor International "Cie Generale D'optique"	Process of integrating a photochromic substance into an ophthalmic lens and a photochromic lens of organic material
US4931220A (en) *	1987-11-24	1990-06-05	Ppg Industries, Inc.	Organic photochromic pigment particulates

1973
- 1973-09-12 IL IL43211A patent/IL43211A0/en unknown
- 1973-09-15 DE DE19732347018 patent/DE2347018A1/en active Pending
- 1973-09-20 AR AR250193A patent/AR198117A1/en active
- 1973-09-27 GB GB4529973A patent/GB1418089A/en not_active Expired
- 1973-10-12 AU AU61333/73A patent/AU6133373A/en not_active Expired
- 1973-10-16 IT IT53158/73A patent/IT997765B/en active
- 1973-10-23 AT AT897573A patent/ATA897573A/en not_active Application Discontinuation
- 1973-11-26 BR BR9247/73A patent/BR7309247D0/en unknown
- 1973-11-29 FR FR7343536A patent/FR2211666A1/fr not_active Withdrawn
- 1973-11-30 JP JP48133642A patent/JPS4989551A/ja active Pending
- 1973-11-30 NL NL7316400A patent/NL7316400A/xx unknown

Also Published As

Publication number	Publication date
JPS4989551A (en)	1974-08-27
ATA897573A (en)	1976-07-15
BR7309247D0 (en)	1974-08-29
DE2347018A1 (en)	1974-06-06
IL43211A0 (en)	1973-11-28
GB1418089A (en)	1975-12-17
NL7316400A (en)	1974-06-05
AR198117A1 (en)	1974-05-31
FR2211666A1 (en)	1974-07-19
AU6133373A (en)	1975-04-17

Publication	Publication Date	Title
IT989856B (en)	1975-06-10	IMPROVEMENT IN AUTOMATIC PILOTS
IT997864B (en)	1975-12-30	IMPROVEMENT IN BLOOD OXYGENATING DEVICES
IT990067B (en)	1975-06-20	IMPROVEMENT IN BABY DIAPERS
IT980078B (en)	1974-09-30	IMPROVEMENT IN INHALERS
IT985032B (en)	1974-11-30	IMPROVEMENT IN CATOPERIC OBJECTIVES
IT979811B (en)	1974-09-30	IMPROVEMENT IN THE TAPS
IT979848B (en)	1974-09-30	IMPROVEMENT IN INHALERS
IT994737B (en)	1975-10-20	IMPROVEMENT IN HOMOCINETIC JOINTS
IT991959B (en)	1975-08-30	IMPROVEMENT IN HOMOCINETIC JOINTS
IT990900B (en)	1975-07-10	IMPROVEMENT IN THE THERMISTORS
IT997701B (en)	1975-12-30	IMPROVEMENT IN CATHETERS
IT977188B (en)	1974-09-10	IMPROVEMENT IN MAGNETRON
IT989265B (en)	1975-05-20	IMPROVEMENT IN HARROWS
IT997568B (en)	1975-12-30	IMPROVEMENT IN BABY DIAPERS
IT980243B (en)	1974-09-30	IMPROVEMENT IN THE PRINTER DEVICES
IT985075B (en)	1974-11-30	IMPROVEMENT IN GRANULATORS
IT976775B (en)	1974-09-10	IMPROVEMENT IN GAMING DEVICES
IT1006610B (en)	1976-10-20	IMPROVEMENT IN CONNECTORS
IT985676B (en)	1974-12-10	IMPROVEMENT IN EMPORIZERS
IT957845B (en)	1973-10-20	IMPROVEMENT IN VIBRATORS
IT994414B (en)	1975-10-20	IMPROVEMENT IN MAGNETRON
IT989937B (en)	1975-06-10	IMPROVEMENT IN BLOOD FILTERS
IT996430B (en)	1975-12-10	IMPROVEMENT IN RADIOR RECEIVERS
IT997765B (en)	1975-12-30	IMPROVEMENT IN PHOTOCROMIC OPHTHALMIC DEVICES
IT984927B (en)	1974-11-20	IMPROVEMENT IN THE TERGIORI STALL