Inventor

Donald L. Watrous

Inventor

Clifton Park, NY, US

Overview

21→

Patents

1976–1996

Patent span

Electricity

Primary field (CPC H)

Patents· 21 as inventor

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

H10Wprimary

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1024%

H02JElectric power networks14%

H02HEmergency protective circuit arrangements10%

G05DSystems for controlling or regulating non-electric variables7%

H04QSelecting7%

A47JKitchen equipment3%

G01RMeasuring electric variables3%

G05FSystems for regulating electric or magnetic variables3%

G08BSignalling systems, e.g. personal calling systems3%

H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems3%

PatentTitleYear

5,532,635'Voltage clamp circuit and method'1996 5,473,193'Package for parallel subelement semiconductor devices'1995 5,424,563'Apparatus and method for increasing breakdown voltage ruggedness in semiconductor devices'1995 5,209,390'Hermetic package and packaged semiconductor chip having closely spaced leads extending through the package lid'1993 5,166,773'Hermetic package and packaged semiconductor chip having closely spaced leads extending through the package lid'1992 5,135,890'Method of forming a hermetic package having a lead extending through an aperture in the package lid and packaged semiconductor chip'1992 5,105,536'Method of packaging a semiconductor chip in a low inductance package'1992 5,103,290'Hermetic package having a lead extending through an aperture in the package lid and packaged semiconductor chip'1992 5,028,987'High current hermetic package having a lead extending through the package lid and a packaged semiconductor chip'1991 4,907,253'Cross-connected switch having means for removing switching modules without interrupting service'1990 4,860,334'System for detecting and locating defective crosspoint switches'1989 4,675,777'Temperature-responsive circuit for load control apparatus'1987 4,346,337'Voltage regulator circuit with multiple control functions'1982 4,316,185'Battery monitor circuit'1982 4,286,205'Interface circuit for standard voltage regulators'1981 4,263,543'Control circuit for controlling battery voltage transition rate in an automotive electrical system'1981 4,222,037'Cooking cycle timer'1980 4,197,581'Control system for and method of controlling a cooking appliance'1980 4,093,909'Method and apparatus for operating a semiconductor integrated circuit at minimum power requirements'1978 4,030,013'Emergency lighting system AC line voltage sensing'1977 3,953,766'Ground fault circuit interrupter and electronic module therefor'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1993Patents assigned to GEN ELECTRIC (16)· patent assignee history

1976–1982Based in Liverpool, NY, US· patent location history

1987–1996Based in Clifton Park, NY, US· patent location history

1989–1990Patents assigned to PACIFIC BELL (2)· patent assignee history

1995–1996Patents assigned to HARRIS CORP (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
GEN ELECTRIC	16	1976–1993
HARRIS CORP	3	1995–1996
PACIFIC BELL	2	1989–1990

Locations

Location	Patents	Span
Clifton Park, New York, US	12	1987–1996
Liverpool, New York, US	9	1976–1982