Inventor · disambiguated record
Donald E. Woollen
Also filed as: WOOLLEN DONALD E · WOOLLEN DONALD E JR · WOOLLEN JR DONALD E
4 granted patents·1 pending application·47 citations·filing 1991–2009
76Inventor score
Top patents by PatentIndex Score
5 records- 0182US7614366B2High efficiency water heaterARNOLD GEORGE R·Filed 2007·Granted Nov 10, 2009·19 cites·7 claims
- 0264US8327810B2High efficiency water heaterARNOLD GEORGE R·Filed 2009·Granted Dec 11, 2012·4 cites·15 claims
- 0346US5313914APotable hot water storage vessel and direct-fired heat exchangerWOOLLEN DONALD E·Filed 1992·Granted May 24, 1994·16 cites·12 claims
- 0432US2005178768A1Liquid tank liner connectionAQUA TECHNOLOGIES INC·Filed 2004·Application pending·0 cites
- 0531US5207212ASubmersible high-efficiency combustion chamber for a water heaterWOOLLEN JR DONALD E·Filed 1991·Granted May 4, 1993·8 cites·7 claims
Join the waitlist — get patent alerts
Get an alert when Donald E. Woollen 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 →