LexDanaLexDanabeta
Inventor

David Townsend

Inventor
Chapel Hill, NC, US

Overview

5→
Patents
1999–2004
Patent span
Performing operations
Primary field (CPC B)

Patents· 5 as inventor

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

H04Mprimary
H04MTelephonic communication25%
B60RVehicles, vehicle fittings, or vehicle parts, not otherwise provided for17%
H04BTransmission17%
B01DSeparation8%
B23PMetal-working not otherwise provided for8%
B60TVehicle brake control systems or parts thereof8%
F16DCouplings for transmitting rotation8%
Y10TTechnical subjects covered by former us classification8%
PatentTitleYear
6,751,487'Turn around cellular telephone'20046,640,463'Vehicle air supply systems'20036,542,758'Distributed radio telephone for use in a vehicle'20036,532,374'Distributed radio telephone for use in a vehicle'20035,987,728'Method of forming a vehicle transmission clutch housing'1999

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1999Patents assigned to MASCOTECH INC (1)· patent assignee history
1999Based in West Bloomfield, MI, US· patent location history
2003–2004Patents assigned to ERICSSON INC (3)· patent assignee history
2003Patents assigned to WABCO AUTOMOTIVE UK LTD (1)· patent assignee history
2003–2004Based in Chapel Hill, NC, US· patent location history
2003Based in Wakefield, GB· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
ERICSSON INC32003–2004
MASCOTECH INC11999
WABCO AUTOMOTIVE UK LTD12003
Locations
LocationPatentsSpan
Chapel Hill, NC, US32003–2004
Wakefield, GB12003
West Bloomfield, MI, US11999