Assignee
PETRARCH SYSTEMS INC
US·18 granted patents·432 citations·filing 1980–1987
Top patents by PatentIndex Score
18 records- 0197US4714739ACurable silicone semi-interpenetrating polymer networks and methods of making samePETRARCH SYSTEMS INC·Filed 1984·Granted Dec 22, 1987·78 cites·29 claims
- 0297US4595775AN-methylhydridosilazanes, polymers thereof, methods of making same and silicon nitrides produced therefromPETRARCH SYSTEMS INC·Filed 1984·Granted Jun 17, 1986·48 cites·14 claims
- 0396US4491669AMixed alkoxyaminosilanes, methods of making same and vulcanizing silicons prepared therefromPETRARCH SYSTEMS INC·Filed 1980·Granted Jan 1, 1985·71 cites·25 claims
- 0494US4500688ACurable silicone containing compositions and methods of making samePETRARCH SYSTEMS INC·Filed 1982·Granted Feb 19, 1985·55 cites·22 claims
- 0586US4478981AMixtures of polyacrylate resins and siloxane carbonate copolymersPETRARCH SYSTEMS INC·Filed 1982·Granted Oct 23, 1984·36 cites·11 claims
- 0684US4711820AMethod of siliconization of surfaces with lower alkyl silanesPETRARCH SYSTEMS INC·Filed 1986·Granted Dec 8, 1987·38 cites·20 claims
- 0781US4550139AMixtures of polyacrylate resins and siloxane-styrene copolymersPETRARCH SYSTEMS INC·Filed 1983·Granted Oct 29, 1985·29 cites·14 claims
- 0875US4469881A[2-(p-t-Butylphenyl)ethyl]silanes and method of making the samePETRARCH SYSTEMS INC·Filed 1982·Granted Sep 4, 1984·9 cites·11 claims
- 0968US4577039AMethod of preparing hexamethylcyclotrisilazanePETRARCH SYSTEMS INC·Filed 1985·Granted Mar 18, 1986·10 cites·14 claims
- 1059US4626583APolysilane-siloxane oligomers and copolymers and methods of making the samePETRARCH SYSTEMS INC·Filed 1985·Granted Dec 2, 1986·10 cites·18 claims
- 1158US4699991AMethods of using silacrown ethers as catalystsPETRARCH SYSTEMS INC·Filed 1982·Granted Oct 13, 1987·4 cites·19 claims
- 1256US4710449AHigh contrast low metal ion positive photoresist developing method using aqueous base solutions with surfactantsPETRARCH SYSTEMS INC·Filed 1986·Granted Dec 1, 1987·12 cites·30 claims
- 1355US4362884ASilacrown ethers, method of making same, and use as phase-transfer catalystsPETRARCH SYSTEMS INC·Filed 1981·Granted Dec 7, 1982·3 cites·12 claims
- 1449US4824769AHigh contrast photoresist developerPETRARCH SYSTEMS INC·Filed 1987·Granted Apr 25, 1989·9 cites·5 claims
- 1547US4670372AProcess of developing radiation imaged photoresist with alkaline developer solution including a carboxylated surfactantPETRARCH SYSTEMS INC·Filed 1984·Granted Jun 2, 1987·9 cites·4 claims
- 1646US4822722AProcess of using high contrast photoresist developer with enhanced sensitivity to form positive resist imagePETRARCH SYSTEMS INC·Filed 1987·Granted Apr 18, 1989·9 cites·4 claims
- 1738US4336395AEthylene bridged amine functional silanes, composites using the same, and intermediates thereforPETRARCH SYSTEMS INC·Filed 1980·Granted Jun 22, 1982·1 cites·7 claims
- 1836US4596882AModified silacrown ethers and methods of making samePETRARCH SYSTEMS INC·Filed 1984·Granted Jun 24, 1986·1 cites·11 claims
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