ZA844964B - - Google Patents
Info
- Publication number
- ZA844964B ZA844964B ZA844964A ZA844964A ZA844964B ZA 844964 B ZA844964 B ZA 844964B ZA 844964 A ZA844964 A ZA 844964A ZA 844964 A ZA844964 A ZA 844964A ZA 844964 B ZA844964 B ZA 844964B
- Authority
- ZA
- South Africa
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/18—Investigating or analyzing materials by the use of thermal means by investigating thermal conductivity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/389—Precious stones; Pearls
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IL71911A IL71911A (en) | 1984-05-23 | 1984-05-23 | Diamond testing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA844964B true ZA844964B (xx) | 1985-01-03 |
Family
ID=11055080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA844964A ZA844964B (xx) | 1984-05-23 | 1984-06-29 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US4616939A (xx) |
| IL (1) | IL71911A (xx) |
| ZA (1) | ZA844964B (xx) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5559436A (en) * | 1994-11-21 | 1996-09-24 | Marion Matthews | Method and apparatus for distinguishing synthetic diamonds from natural diamonds |
| US6281680B1 (en) | 1994-11-21 | 2001-08-28 | Marion Matthews | Method and apparatus for distinguishing synthetic diamonds from natural diamonds |
| US6265884B1 (en) | 1998-05-13 | 2001-07-24 | Ceres Corporation | Electrical conductivity gem tester |
| US6439766B1 (en) | 2001-02-06 | 2002-08-27 | Oris L. Nelson | Diamond detecting apparatus and method |
| BE1015022A3 (nl) * | 2002-07-05 | 2004-08-03 | Wetenschappelijk En Tech Onder | Werkwijze en inrichting voor het onderscheiden van edelstenen. |
| CN201765202U (zh) * | 2010-07-09 | 2011-03-16 | 朱秀玲 | 多功能宝石测试仪 |
| WO2019123383A1 (en) | 2017-12-21 | 2019-06-27 | Università Degli Studi Di Milano - Bicocca | System and method for spectroscopy analysis of diamonds |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3611786A (en) * | 1969-05-23 | 1971-10-12 | Bell Telephone Labor Inc | Measurement of thermal conductivity of hard crystalline bodies |
| FR2339847A1 (fr) * | 1976-01-28 | 1977-08-26 | Crouzet Sa | Dispositif pour obtenir des signaux electriques dont la periode est fonction d'une temperature |
| US4137770A (en) * | 1977-12-05 | 1979-02-06 | The United States Of America As Represented By The Secretary Of The Navy | Electronic thermostat |
| US4255962A (en) * | 1978-04-10 | 1981-03-17 | Ceres Corporation | Method and means of rapidly distinguishing a simulated diamond from natural diamond |
| US4364677A (en) * | 1978-04-10 | 1982-12-21 | Ceres Electronics Corporation | Method and means of rapidly distnguishing a simulated diamond from natural diamond |
| US4344315A (en) * | 1978-12-29 | 1982-08-17 | Ceres Electronics Corporation | Method and device for distinguishing material by thermal conductivity |
| JPS56128433A (en) * | 1980-03-14 | 1981-10-07 | Seiko Instr & Electronics Ltd | Detecting apparatus of temperature |
-
1984
- 1984-05-15 US US06/610,353 patent/US4616939A/en not_active Expired - Lifetime
- 1984-05-23 IL IL71911A patent/IL71911A/xx unknown
- 1984-06-29 ZA ZA844964A patent/ZA844964B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IL71911A (en) | 1989-01-31 |
| IL71911A0 (en) | 1984-09-30 |
| US4616939A (en) | 1986-10-14 |