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Inventor

Douglas J. Hatch

Inventor
Chittenango, NY, US

Overview

3→
Patents
1985–1998
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.

B23Bprimary
B23BTurning20%
G05BControl or regulating systems in general20%
H03LAutomatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses20%
H04NPictorial communication, e.g. television20%
Y10TTechnical subjects covered by former us classification20%
PatentTitleYear
5,802,937'Smart tool holder'19984,629,999'Phase-locked loop capable of generating a plurality of stable frequency signals'19864,521,809'Method and apparatus for controlling access to selected television programs'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1985–1986Patents assigned to PHILIPS CORP (2)· patent assignee history
1985–1986Based in Chittenango, NY, US· patent location history
1998Patents assigned to UNIV CALIFORNIA (1)· patent assignee history
1998Based in Los Alamos, NM, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
PHILIPS CORP21985–1986
UNIV CALIFORNIA11998
Locations
LocationPatentsSpan
Chittenango, New York, US21985–1986
Los Alamos, NM, US11998