Assignee
GREFCO
US·23 granted patents·1,026 citations·filing 1974–1988
Top patents by PatentIndex Score
23 records- 0196US4067155ASealing systemGREFCO·Filed 1975·Granted Jan 10, 1978·387 cites·14 claims
- 0292US5002696AExpanded mineral particles and apparatus and method of productionGREFCO·Filed 1988·Granted Mar 26, 1991·70 cites·26 claims
- 0392US4063395ATwin membrane, self sealing, mechanically fastened insulated roof deck systemGREFCO·Filed 1974·Granted Dec 20, 1977·86 cites·5 claims
- 0491US4059933AStrip for fastening and sealing sheets of construction materialGREFCO·Filed 1977·Granted Nov 29, 1977·99 cites·24 claims
- 0590US4313997APerlite boards and method for making sameGREFCO·Filed 1980·Granted Feb 2, 1982·64 cites·14 claims
- 0690US4255489APerlite fillerGREFCO·Filed 1979·Granted Mar 10, 1981·35 cites·7 claims
- 0789US4183980APerlite filler coated with polydimethylsiloxaneGREFCO·Filed 1978·Granted Jan 15, 1980·33 cites·17 claims
- 0885US4057908AMethod and apparatus for drying damp powderGREFCO·Filed 1976·Granted Nov 15, 1977·34 cites·13 claims
- 0974US4142968ADiatomaceous earth filteraid and method for its manufactureGREFCO·Filed 1977·Granted Mar 6, 1979·25 cites·24 claims
- 1074US4059231AMethod and apparatus for selectively comminuting particles of a frangible materialGREFCO·Filed 1976·Granted Nov 22, 1977·27 cites·16 claims
- 1170US3952830AMineral aggregate (perlite) acoustical boardGREFCO·Filed 1974·Granted Apr 27, 1976·29 cites·11 claims
- 1257US4187174ADiatomaceous earth filteraid and method for its manufactureGREFCO·Filed 1978·Granted Feb 5, 1980·13 cites·22 claims
- 1355US4212755ASettle resistant loose-fill perlite insulation comprising particles rendered slightly tacky by a coating thereonGREFCO·Filed 1978·Granted Jul 15, 1980·12 cites·12 claims
- 1454US3958373ATwin membrane, self sealing, mechanically fastened insulated roof deck systemGREFCO·Filed 1975·Granted May 25, 1976·22 cites·3 claims
- 1553US4302344ALoose-fill, thermal insulationGREFCO·Filed 1980·Granted Nov 24, 1981·13 cites·13 claims
- 1651US3978264ACoating for porous surfacesGREFCO·Filed 1975·Granted Aug 31, 1976·21 cites·10 claims
- 1750US4011183ABuilding board products and process for producing sameGREFCO·Filed 1976·Granted Mar 8, 1977·10 cites·29 claims
- 1848US4073673AProcess for producing an expansion joint coverGREFCO·Filed 1975·Granted Feb 14, 1978·14 cites·2 claims
- 1944US4671973AMethod for the treatment of mineral extender fillersGREFCO·Filed 1985·Granted Jun 9, 1987·6 cites·14 claims
- 2043US4110501ASplicing stripGREFCO·Filed 1977·Granted Aug 29, 1978·11 cites·19 claims
- 2132US4521182AMethod and apparatus for heating particulate materialGREFCO·Filed 1982·Granted Jun 4, 1985·5 cites·21 claims
- 2229US4071993AConstruction material in sheet form and method of joining sheets edge-to-edgeGREFCO·Filed 1976·Granted Feb 7, 1978·8 cites·8 claims
- 2323US4145284AMethod for making polymeric filter aids and products thereofGREFCO·Filed 1978·Granted Mar 20, 1979·2 cites·3 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →