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Inventor

John G. Simmons

Inventor
Amherst, MA, US

Overview

3→
Patents
1989–1990
Patent span
Electricity
Primary field (CPC H)

Patents· 3 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H10Fprimary
H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation38%
H10DInorganic electric semiconductor devices25%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein13%
H03KPulse technique13%
H10HInorganic light-emitting semiconductor devices having potential barriers13%
PatentTitleYear
4,899,200'Novel high-speed integrated heterostructure transistors, photodetectors, and optoelectronic circuits'19904,806,997'Double heterostructure optoelectronic switch'19894,800,415'Bipolar inversion channel device'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989Patents assigned to AMERICAN TELEPHONE & TELEGRAPH (2)· patent assignee history
1989Based in St. Leonards on Sea, GB· patent location history
1989Based in Bethlehem, PA, US· patent location history
1990Patents assigned to UNIV MINNESOTA (1)· patent assignee history
1990Based in Amherst, MA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
AMERICAN TELEPHONE & TELEGRAPH21989
UNIV MINNESOTA11990
Locations
LocationPatentsSpan
Amherst, Massachusetts, US11990
St. Leonards on Sea, GB11989
Bethlehem, Pennsylvania, US11989