Inventor · disambiguated record
Donald A. Irwin, Sr.
Also filed as: IRWIN DONALD A · IRWIN SR DONALD A
6 granted patents·373 citations·filing 1974–2006
88Inventor score
Top patents by PatentIndex Score
6 records- 0192US5612113ACarpet with fluid barrierDARWIN ENTERPRISES INC·Filed 1996·Granted Mar 18, 1997·129 cites·5 claims
- 0291US7364634B1Carpet construction having secondary backingDARWIN ENTPR·Filed 2006·Granted Apr 29, 2008·35 cites·6 claims
- 0388US6475592B1Carpet backing that provides dimensional stabilityDARWIN ENTPR INC·Filed 1999·Granted Nov 5, 2002·62 cites·10 claims
- 0483US5962101ADimensionally stable tufted carpetIRWIN SR DONALD A·Filed 1997·Granted Oct 5, 1999·72 cites·10 claims
- 0582US6479125B1Backing for tufted carpet that imparts dimensional stabilityDARWIN ENTPR INC·Filed 1999·Granted Nov 12, 2002·61 cites·9 claims
- 0665US4010028ABonded calcium carbide article and method for making the sameUNIROYAL INC·Filed 1974·Granted Mar 1, 1977·14 cites·22 claims
Join the waitlist — get patent alerts
Get an alert when Donald A. Irwin, Sr. files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →