Delphian Corporation

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Sunnyvale, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for gas detector calibration
- Patent number 4,489,590
- Issue date Dec 25, 1984
- Delphian Corporation
- David M. Hadden
- G01 - MEASURING TESTING
Information Patent Grant
Hydrogen sulfide measuring systems and the like
- Patent number 4,432,224
- Issue date Feb 21, 1984
- Delphian Corporation
- Pekka M. Typpo
- G01 - MEASURING TESTING
Information Patent Grant
Automatic portable pH meter and method with calibration receptacle
- Patent number 4,260,950
- Issue date Apr 7, 1981
- Delphian Corporation
- David M. Hadden
- G01 - MEASURING TESTING
Information Patent Grant
Sulfide monitoring system and method
- Patent number 4,157,283
- Issue date Jun 5, 1979
- Delphian Corporation
- Mark S. Zetter
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and apparatus for monitoring sulfide in well drilling mud
- Patent number 4,154,660
- Issue date May 15, 1979
- Delphian Corporation
- Eric S. Micko
- E21 - EARTH DRILLING MINING
Information Patent Grant
Hydrogen sulfide monitoring system
- Patent number 4,124,475
- Issue date Nov 7, 1978
- Delphian Corporation
- Mark S. Zetter
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

Information Trademark
73355856 - MISER
- Serial number 73355856
- Registration number 1228340
- Filing date Mar 22, 1982
- Delphian Corporation
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
73347019 - MUD DUCK
- Serial number 73347019
- Registration number 1233385
- Filing date Jan 25, 1982
- Delphian Corporation
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
73232100
- Serial number 73232100
- Registration number 1156222
- Filing date Sep 20, 1979
- Delphian Corporation
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
73232101 - DELPHIAN
- Serial number 73232101
- Registration number 1155422
- Filing date Sep 20, 1979
- Delphian Corporation
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments