Inventor · disambiguated record
Donald C. Hill
Also filed as: HILL DONALD · HILL DONALD C · HILL SR DONALD C
6 granted patents·1 pending application·227 citations·filing 1979–2005
87Inventor score
Top patents by PatentIndex Score
7 records- 0188US4906313AFusion weld method and assembly for forming a fusion welded joint between pipe sectionsLYALL R W & CO INC·Filed 1988·Granted Mar 6, 1990·65 cites·11 claims
- 0281US4386796APipe repair couplingR W LYALL CO INC·Filed 1981·Granted Jun 7, 1983·51 cites·10 claims
- 0380US4718698AApparatus and method of forming fusion welded butt joint between thermoplastic pipe sectionsLYALL R W & CO INC·Filed 1985·Granted Jan 12, 1988·45 cites·5 claims
- 0477US6904687B1Extended reach tree maintenance apparatusFiled 2004·Granted Jun 14, 2005·23 cites·13 claims
- 0567US4257452ABiased open direct response valve with damping meansLYALL R W & CO INC·Filed 1979·Granted Mar 24, 1981·22 cites·8 claims
- 0658US4243254ASlip fit type tubing couplingLYALL R W & CO INC·Filed 1979·Granted Jan 6, 1981·21 cites·13 claims
- 0738US2006063971A1Method for attaching prosthetic penile attachments/extensionsHILL DONALD·Filed 2005·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Donald C. Hill 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 →