Inventor

Stephen Hayes

Inventor
Carrollton, TX, US

Overview

13→
Patents
1977–2001
Patent span
Electricity
Primary field (CPC H)

Patents· 13 as inventor

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

H04Wprimary
H04WWireless communication networks46%
G01SRadio direction-finding13%
H04LTransmission of digital information, e.g. telegraphic communication8%
H04MTelephonic communication8%
H04QSelecting8%
F16KValves4%
H04BTransmission4%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%
Y10TTechnical subjects covered by former us classification4%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977Patents assigned to EWARTS LIMITED (1)· patent assignee history
1977Based in Dudley, GB· patent location history
1998Patents assigned to ERRICSON INC (1)· patent assignee history
1998–2001Based in Carrollton, TX, US· patent location history
1999–2001Patents assigned to ERICSSON INC (10)· patent assignee history
1999Patents assigned to ERICSSON GE MOBILE INC (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
ERICSSON INC101999–2001
ERICSSON GE MOBILE INC11999
ERRICSON INC11998
EWARTS LIMITED11977
Locations
LocationPatentsSpan
Carrollton, Texas, US121998–2001
Dudley, GB11977