Inventor · disambiguated record
Francis U. Hill
Also filed as: HILL FRANCIS U
16 granted patents·319 citations·filing 1989–1991
94Inventor score
Files withSORRENTO ENGINEERING INC8SORRENTO ENGINEERING CORP6HILL FRANCIS U1IRBIT RESEARCH & CONSULTING AG1
Top patents by PatentIndex Score
16 records- 0187US5135959AMethod of impregnating reticulated foam with polymide foam and products thereofSORRENTO ENGINEERING CORP·Filed 1991·Granted Aug 4, 1992·61 cites·10 claims
- 0285US5188879APolyimide foam filled structuresSORRENTO ENGINEERING CORP·Filed 1991·Granted Feb 23, 1993·60 cites·8 claims
- 0378US5000813AMethod of improving foam fire resistance through the introduction of metal oxides thereintoSORRENTO ENGINEERING INC·Filed 1990·Granted Mar 19, 1991·48 cites·2 claims
- 0472US5047436AMethod of improving foam fire resistance through the introduction of inorganic particles thereintoSORRENTO ENGINEERING CORP·Filed 1990·Granted Sep 10, 1991·38 cites·9 claims
- 0570US4865784AMethod of making porous inorganic particle filled polyimide foam insulation productsHILL FRANCIS U·Filed 1989·Granted Sep 12, 1989·27 cites·10 claims
- 0669US4980389APolyetherimide foam precursors and foams having improved physical properties and methods of making themIRBIT RESEARCH & CONSULTING AG·Filed 1990·Granted Dec 25, 1990·19 cites·12 claims
- 0748US4980102AMethod of manufacturing polyimide foam shapes having improved density and cell size uniformitySORRENTO ENGINEERING INC·Filed 1990·Granted Dec 25, 1990·10 cites·2 claims
- 0847US5192810AMethod and apparatus for manufacturing dimpled structures from elastic clothSORRENTO ENGINEERING CORP·Filed 1991·Granted Mar 9, 1993·9 cites·2 claims
- 0941US4988739AMethod of improving foam fire resistance through the introduction of metal oxides thereintoSORRENTO ENGINEERING INC·Filed 1990·Granted Jan 29, 1991·8 cites·2 claims
- 1041US4978690AMethod of making porous inorganic particle filled polyimide foam insulation productsSORRENTO ENGINEERING INC·Filed 1989·Granted Dec 18, 1990·6 cites·4 claims
- 1141US4935452AMethod of improving foam fire resistance through the introduction of metal oxides thereintoSORRENTO ENGINEERING INC·Filed 1989·Granted Jun 19, 1990·6 cites·12 claims
- 1241US4923651AMethod of manufacturing polyimide foam shapes having improved density and cell size uniformitySORRENTO ENGINEERING INC·Filed 1989·Granted May 8, 1990·7 cites·10 claims
- 1336US4980004AMethod of manufacturing polyimide foam shapes having improved density and cell size uniformitySORRENTO ENGINEERING INC·Filed 1990·Granted Dec 25, 1990·6 cites·7 claims
- 1435US5011558AMethod of improving foam fire resistance through the introduction of inorganic particles thereintoSORRENTO ENGINEERING CORP·Filed 1990·Granted Apr 30, 1991·5 cites·2 claims
- 1534US4962132AMethod of improving foam fire resistance through the introduction of inorganic particles thereintoSORRENTO ENGINEERING CORP·Filed 1989·Granted Oct 9, 1990·5 cites·7 claims
- 1633US4923907AMethod of making porous inorganic particle filled polyimide foam insulation productsSORRENTO ENGINEERING INC·Filed 1989·Granted May 8, 1990·4 cites·2 claims
Join the waitlist — get patent alerts
Get an alert when Francis U. 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 →