Inventor · disambiguated record
Douglas M. Canfield
Also filed as: CANFIELD DOUGLAS · CANFIELD DOUGLAS M
5 granted patents·2 pending applications·164 citations·filing 1982–2013
83Inventor score
Top patents by PatentIndex Score
7 records- 0189US4601743AGlass furnace with heat sensing meansCASSO SOLAR CORP·Filed 1985·Granted Jul 22, 1986·56 cites·20 claims
- 0280US5235667AHeating method and assembly utilizing electric heating elements in conjunction with combustionCASSO SOLAR CORP·Filed 1991·Granted Aug 10, 1993·48 cites·20 claims
- 0376US4531047AClip-mounted quartz tube electric heaterCASSO SOLAR CORP·Filed 1982·Granted Jul 23, 1985·36 cites·4 claims
- 0455US4528016AGlass sheet treating furnace with a roller conveyorCANFIELD DOUGLAS M·Filed 1983·Granted Jul 9, 1985·16 cites·9 claims
- 0545US2014216641A1Indexing Laminating SystemCANFIELD DOUGLAS M·Filed 2013·Application pending·0 cites
- 0642US4608073ARoller conveyor for a glass furnaceCASSO SOLAR CORP·Filed 1985·Granted Aug 26, 1986·8 cites·10 claims
- 0741US2011247754A1Method For Vacuum Laminating Glass Without The Use Of Preconditioned Interlayer Material Or An AutoclaveCANFIELD DOUGLAS M·Filed 2011·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Douglas M. Canfield 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 →