Hoffman Controls Corp.
Patent Owner
Stats
- 1 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Jul 24, 2007 most recent publication
Details
- 1 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 225 Total Citation Count
- May 22, 1981 Earliest Filing
- 7 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Intl Class
Technology
Matters
Rank in Class
Top Patents (by citation)
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Recent Publications
- No Recent Publications to Display
Recent Patents
Patent #
Title
Filing Date
Issue Date
Intl Class
7191826 Variable speed fan motor control for forced air heating/cooling systemFeb 13, 04Mar 20, 07[F25B]
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
6695046 Variable speed fan motor control for forced air heating/cooling systemExpiredAug 01, 00Feb 24, 04[F23N, F25B]
6684944 Variable speed fan motor control for forced air heating/cooling systemExpiredMay 15, 00Feb 03, 04[F23N, F25B]
6070660 Variable speed fan motor control for forced air heating/cooling systemExpiredFeb 18, 97Jun 06, 00[F23N, F25B]
Top Inventors for This Owner
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