P

Inventor

CAMPBELL JOHN S

CA16 patents
⚠️ This page may combine multiple inventors who share the name “CAMPBELL JOHN S”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SPECTRA PHYSICS

3 patents
US4861973AAug 29, 1989

Optical scan pattern generating arrangement for a laser scanner

SPECTRA PHYSICS131 citations97
US4799164AJan 17, 1989

Shallow bar code scanner

SPECTRA PHYSICS74 citations96
US4442524AApr 10, 1984

Multiple lever apparatus for positioning an optical element

SPECTRA PHYSICS43 citations88

IPC RESISTORS INC

3 patents
US5867358AFeb 2, 1999

Fault current limiting circuit

IPC RESISTORS INC25 citations91
US6552885B1Apr 22, 2003

Ground fault circuit having circuit failure sensor, and method

IPC RESISTORS INC26 citations85
US5917404AJun 29, 1999

Power resistor

IPC RESISTORS INC15 citations72

AMARILLO GEAR COMPANY LLC

2 patents
US9879771B2Jan 30, 2018

Dry well shaft assembly

AMARILLO GEAR COMPANY LLC3 citations71
US10161500B2Dec 25, 2018

Oil pump plate for in-line filter system

AMARILLO GEAR COMPANY LLC1 citations50

AT & T BELL LAB

1 patent
USD280896SOct 8, 1985

Portable transmitter

AT & T BELL LAB65 citations95

INDIAN EXPLOSIVES LTD

1 patent
US4409044AOct 11, 1983

Water-in-oil emulsion explosives and a method for the preparation of the same

INDIAN EXPLOSIVES LTD23 citations73

TAM CERAMICS INC

1 patent
US4840774AJun 20, 1989

Process for the production of zirconium tetrachloride from dissociated zircon

TAM CERAMICS INC10 citations69

MICROSOFT CORP

1 patent
US7636888B2Dec 22, 2009

Verifying compatibility between document features and server capabilities

MICROSOFT CORP4 citations62

AT&T INFORMATION SYSTEMS INC

1 patent
USD282358SJan 28, 1986

Telecommunications system console or similar article

AT&T INFORMATION SYSTEMS INC3 citations61

ACHIP TECHNOLOGIES INC

1 patent
US5457643AOct 10, 1995

Pocket electronic data retrieval device allowing access to compressed data on a memory chip with unique interchangeable chip carrier

ACHIP TECHNOLOGIES INC16 citations59

COOKSON GROUP PLC

1 patent
US5026504AJun 25, 1991

Curing composition for polysulphide polymers

COOKSON GROUP PLC2 citations53

MICROSOFT TECHNOLOGY LICENSING LLC

1 patent
US10552532B2Feb 4, 2020

Techniques to present a dynamic formula bar in a spreadsheet

MICROSOFT TECHNOLOGY LICENSING LLC0 citations47