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Inventor

Thomas W. Ramsay

Inventor
Kitchener, CA

Overview

12→
Patents
1990–2008
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 12 as inventor

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

F16Jprimary
F16JPistons26%
F04DNon-positive-displacement pumps22%
C07DHeterocyclic compounds13%
F16CShafts13%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations9%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%
B63HMarine propulsion or steering4%
C07CAcyclic or carbocyclic compounds4%
PatentTitleYear
7,354,046'Sealing apparatus having sequentially engageable seals'20087,059,608'Installation and deployment sleeves for lip seals'20066,979,002'Sealing apparatus having sequentially engageable seals'20056,806,375'Process for the production of purine derivatives and intermediates therefor'20046,695,480'Opposed flow seal/bearing assembly'20046,555,685'Process for the production of purine derivatives and intermediates therefor'20036,210,103'Rotary seal and/or bearing'20015,984,627'Seal/bearing apparatus'19995,973,205'Process for the preparation of 1, 3-diaminopropane derivatives and intermediates useful in this process'19995,827,042'Seal/bearing assembly'19985,800,120'Pump impeller with adjustable blades'19984,946,966'1-methylindazole-3-carboxylic acid process'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990Patents assigned to BEECHAM GROUP PLC (1)· patent assignee history
1998–2004Patents assigned to CHESTERTON A W CO (5)· patent assignee history
1998–2001Based in Kitchener, CA· patent location history
1999Patents assigned to SMITHKLINE BEECHAM PLC (1)· patent assignee history
1999Based in Suffolk, GB· patent location history
2003–2004Patents assigned to NOVARTIS INT PHARM LTD (2)· patent assignee history
2003–2004Based in Haverhill, GB· patent location history
2004Based in Ontario, CA· patent location history
2005–2008Patents assigned to ASHBRIDGE & ROSEBURGH INC (3)· patent assignee history
2005–2008Based in Waterloo, CA· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CHESTERTON A W CO51998–2004
ASHBRIDGE & ROSEBURGH INC32005–2008
NOVARTIS INT PHARM LTD22003–2004
BEECHAM GROUP PLC11990
SMITHKLINE BEECHAM PLC11999
Locations
LocationPatentsSpan
Kitchener, CA41998–2001
Waterloo, CA32005–2008
Haverhill, GB22003–2004
Ontario, CA12004
Suffolk, GB11999