Individual holder
HAGAR DONALD K
US·4 granted patents·46 citations·filing 1976–1986
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
4 records- 0164US4887958AMethod and system for controlling the supply of fuel and air to a furnaceHAGAR DONALD K·Filed 1986·Granted Dec 19, 1989·24 cites·29 claims
- 0249US4088146AApparatus and method for sealing dampersHAGAR DONALD K·Filed 1976·Granted May 9, 1978·10 cites·28 claims
- 0342US4273365AExpansion joint and fabric thereforHAGAR DONALD K·Filed 1979·Granted Jun 16, 1981·11 cites·30 claims
- 0428US4235460AExpansion jointHAGAR DONALD K·Filed 1978·Granted Nov 25, 1980·1 cites·10 claims
Join the waitlist — get patent alerts
Get an alert when HAGAR DONALD K files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →