Andrew D. G. Stewart

Person

Reading, GB

People

Patents Grantslast 30 patents

Information Patent Grant
Detector for ionising radiation
- Patent number 6,707,045
- Issue date Mar 16, 2004
- Ricardo Simon Sussmann
- G01 - MEASURING TESTING
Information Patent Grant
Waveguide window
- Patent number 6,493,499
- Issue date Dec 10, 2002
- John Robert Brandon
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Diamond marking
- Patent number 6,391,215
- Issue date May 21, 2002
- Gersan Establishment
- James Gordon Charters Smith
- B44 - DECORATIVE ARTS
Information Patent Grant
Sensing a narrow frequency band and gemstones
- Patent number 5,351,117
- Issue date Sep 27, 1994
- Gersan Establishment
- Andrew D. G. Stewart
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Making an elongate cut using high energy radiation
- Patent number 5,248,877
- Issue date Sep 28, 1993
- Anstalt Gersan
- Martin Cooper
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Sensing a narrow frequency band of radiation and gemstones
- Patent number 5,206,699
- Issue date Apr 27, 1993
- Gersan Establishment
- Andrew D. G. Stewart
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
LVDT displacement sensor with signal noise reduction for use in wei...
- Patent number 4,916,391
- Issue date Apr 10, 1990
- Eryk S. Doerman
- G01 - MEASURING TESTING
Information Patent Grant
Weighing a number of objects in succession
- Patent number 4,696,358
- Issue date Sep 29, 1987
- Eryk S. Doerman
- G01 - MEASURING TESTING
Information Patent Grant
Integrating sphere arrangement for producing size-corrected color s...
- Patent number 4,645,922
- Issue date Feb 24, 1987
- Spandrel Establishment
- Christopher M. Welbourn
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Examining a gemstone
- Patent number 4,529,305
- Issue date Jul 16, 1985
- Walter T. Welford
- G01 - MEASURING TESTING
Information Patent Grant
Assessing the color of gemstones and the like
- Patent number 4,461,568
- Issue date Jul 24, 1984
- Christopher M. Welbourn
- G01 - MEASURING TESTING
Information Patent Grant
Centering and working gemstones
- Patent number 4,417,564
- Issue date Nov 29, 1983
- John C. Lawrence
- B24 - GRINDING POLISHING

Andrew D. G. Stewart

Person

Patents Grantslast 30 patents

Detector for ionising radiation

Waveguide window

Diamond marking

Sensing a narrow frequency band and gemstones

Making an elongate cut using high energy radiation

Sensing a narrow frequency band of radiation and gemstones

LVDT displacement sensor with signal noise reduction for use in wei...

Weighing a number of objects in succession

Integrating sphere arrangement for producing size-corrected color s...

Examining a gemstone

Assessing the color of gemstones and the like

Centering and working gemstones