JPS55500195A - - Google Patents
Info
- Publication number
- JPS55500195A JPS55500195A JP50069579A JP50069579A JPS55500195A JP S55500195 A JPS55500195 A JP S55500195A JP 50069579 A JP50069579 A JP 50069579A JP 50069579 A JP50069579 A JP 50069579A JP S55500195 A JPS55500195 A JP S55500195A
- Authority
- JP
- Japan
- 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.)
- Pending
Links
Classifications
-
- 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
-
- 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
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 |
|---|---|---|---|
| US05/885,502 US4255962A (en) | 1978-04-10 | 1978-04-10 | Method and means of rapidly distinguishing a simulated diamond from natural diamond |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55500195A true JPS55500195A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1980-04-03 |
Family
ID=25387040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50069579A Pending JPS55500195A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1978-04-10 | 1979-04-10 |
Country Status (4)
Families Citing this family (34)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU521261B2 (en) * | 1979-03-28 | 1982-03-25 | Unisearch Limited | Distinguishing gemstones |
| US4522512A (en) * | 1982-05-05 | 1985-06-11 | The United States Of America As Represented By The Secretary Of The Army | Thermal conductivity measurement method |
| US4541730A (en) * | 1983-05-19 | 1985-09-17 | Honeywell Inc. | Apparatus and method for testing evacuatable dewar vessels |
| US4616939A (en) * | 1984-05-23 | 1986-10-14 | Meir Gitlis | Apparatus for testing diamonds |
| US4752770A (en) * | 1986-03-10 | 1988-06-21 | General Electric Company | Apparatus for monitoring temperatures of implements during brazing |
| US4722611A (en) * | 1986-03-13 | 1988-02-02 | Union Carbide Corporation | Apparatus and process for monitoring the cooling properties of liquid quenchants and restoring used quenchants |
| FR2626371B1 (fr) * | 1988-01-25 | 1991-09-20 | Agronomique Inst Nat Rech | Methode d'etude et de controle des changements d'etat d'un milieu liquide ou gelifie par mesure differentielle des caracteristiques thermiques dudit milieu et dispositif capteur pour la mise en oeuvre de cette method |
| US5067820A (en) * | 1990-06-19 | 1991-11-26 | The United States Of America As Represented By The United States Department Of Energy | Radionuclide calorimeter system |
| 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 |
| US5835205A (en) * | 1996-02-12 | 1998-11-10 | C3, Inc. | Optical testing system for distinguishing a silicon carbide gemstone from a diamond |
| US6095680A (en) * | 1997-05-05 | 2000-08-01 | Baratta; Francis I. | Nondestructive fraudulent fastener screening and composition determination device |
| RU2124195C1 (ru) * | 1997-07-15 | 1998-12-27 | Александр Николаевич Калинин | Устройство для определения теплопроводности материалов |
| US5955735A (en) * | 1997-09-29 | 1999-09-21 | C3, Inc. | Apparatus and method for positively identifying synthetic silicon carbide gemstones |
| RU2123179C1 (ru) * | 1997-11-26 | 1998-12-10 | Тамбовский государственный технический университет | Термозонд для неразрушающего контроля теплопроводности материалов |
| US6431748B1 (en) | 1998-03-09 | 2002-08-13 | Francis I. Baratta | Method and apparatus for the nondestructive determination of the purity of a test object |
| 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. |
| RU2258919C1 (ru) * | 2004-07-05 | 2005-08-20 | Тамбовский государственный технический университет (ТГТУ) | Термозонд для неразрушающего контроля теплофизических свойств материалов и готовых изделий |
| US7362109B2 (en) * | 2004-10-18 | 2008-04-22 | Boris Zolotar Loginov | Gem tester using electrical photoconductivity |
| JP4790405B2 (ja) * | 2005-12-16 | 2011-10-12 | 三菱電機株式会社 | 熱式流量センサ |
| DE102010018968A1 (de) * | 2010-04-29 | 2011-11-03 | Bundesrepublik Deutschland, vertr. durch d. Bundesministerium f. Wirtschaft und Technologie, dieses vertreten durch d. Präsidenten d. Physikalisch-Technischen Bundesanstalt | Verfahren zum Messen einer thermischen Transportgröße und Transportgrößen-Messvorrichtung |
| US8564316B2 (en) | 2010-06-21 | 2013-10-22 | Sy Kessler Sales, Inc. | Gem tester |
| US9395350B2 (en) | 2010-06-21 | 2016-07-19 | Sy Kessler Sales, Inc. | Gem tester |
| CN201765202U (zh) * | 2010-07-09 | 2011-03-16 | 朱秀玲 | 多功能宝石测试仪 |
| US8278906B2 (en) * | 2010-07-16 | 2012-10-02 | Tri Electronics Inc. | Apparatus for simulating thermal conductivity and electrical resistance of diamonds and their substitutes |
| CN104914129B (zh) * | 2015-04-29 | 2017-10-10 | 河北普莱斯曼金刚石科技有限公司 | 一种金刚石膜热导率检测方法 |
| SG10201506282WA (en) | 2015-08-12 | 2017-03-30 | Jubilee Diamond Instr S Pte Ltd | Diamond Identification Apparatus |
| WO2017208053A1 (en) | 2016-06-01 | 2017-12-07 | Jubilee Diamond Instrument (S) Pte.Ltd. | Precious stone testing device |
| US10989667B2 (en) | 2017-06-01 | 2021-04-27 | Jubilee Diamond Instrument (S) Pte. Ltd. | UV reflection tester |
| US20200371041A1 (en) | 2017-12-19 | 2020-11-26 | Jubilee Diamond Instrument (S) Pte. Ltd. | Gemstone testing apparatus |
| US10837915B2 (en) | 2017-12-19 | 2020-11-17 | Jubilee Diamond Instrument (s) PTE. LTD | Gemstone testing apparatus |
| GB2584876A (en) | 2019-06-19 | 2020-12-23 | Jubilee Diamond Instr S Pte Ltd | Gemstone testing apparatus |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2264968A (en) * | 1938-02-14 | 1941-12-02 | Magnafiux Corp | Apparatus for measuring wall thickness |
| US2362344A (en) * | 1940-06-12 | 1944-11-07 | Univ Ohio State Res Found | Apparatus for measuring moisture |
| US2323715A (en) * | 1941-10-17 | 1943-07-06 | Gen Electric | Thermal testing apparatus |
| US2718141A (en) * | 1952-01-25 | 1955-09-20 | Lorenzo A Richards | Electro-thermal element for measuring moisture in porous media |
| US3016732A (en) * | 1952-10-01 | 1962-01-16 | Gen Motors Corp | Measurement of coating thicknesses by thermal means |
| US2924771A (en) * | 1955-03-04 | 1960-02-09 | Elmer H Greenberg | Method and apparatus for identifying metals |
| US2951360A (en) * | 1956-03-30 | 1960-09-06 | Gen Electric | Thermal conductivity testing |
| US3075377A (en) * | 1956-10-17 | 1963-01-29 | Owens Corning Fiberglass Corp | Apparatus for determining thermal conductivity of materials |
| GB855658A (en) * | 1956-11-29 | 1960-12-07 | Nat Res Dev | Improvements in and relating to the measurement of thermal conductivity |
| US3084534A (en) * | 1959-09-04 | 1963-04-09 | Union Carbide Corp | High temperature differential thermal analyzer |
| US3279239A (en) * | 1964-04-29 | 1966-10-18 | Dow Chemical Co | Method and apparatus for measurement of thermal conductivity |
| US3611786A (en) * | 1969-05-23 | 1971-10-12 | Bell Telephone Labor Inc | Measurement of thermal conductivity of hard crystalline bodies |
| US3668927A (en) * | 1970-10-16 | 1972-06-13 | Atlantic Richfield Co | Borehole thermal conductivity measurements |
| US3810009A (en) * | 1971-10-06 | 1974-05-07 | Universal Oil Prod Co | Apparatus for measuring material fouling of a test specimen |
| US3864969A (en) * | 1973-08-06 | 1975-02-11 | Texaco Inc | Station measurements of earth formation thermal conductivity |
| US3981175A (en) * | 1975-05-19 | 1976-09-21 | Massachusetts Institute Of Technology | Method of and apparatus for nondestructively determining the composition of an unknown material sample |
| US4138878A (en) * | 1976-12-03 | 1979-02-13 | Rohrback Corporation | Method and apparatus for detecting and measuring scale |
-
1978
- 1978-04-10 US US05/885,502 patent/US4255962A/en not_active Expired - Lifetime
-
1979
- 1979-04-10 JP JP50069579A patent/JPS55500195A/ja active Pending
- 1979-04-10 WO PCT/US1979/000220 patent/WO1979000911A1/en unknown
- 1979-11-19 EP EP79900444A patent/EP0015961A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO1979000911A1 (en) | 1979-11-15 |
| US4255962B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1983-01-11 |
| EP0015961A1 (en) | 1980-10-01 |
| US4255962A (en) | 1981-03-17 |