Inventor · disambiguated record
Fred Sonnenberg
Also filed as: SONNENBERG FRED · SONNENBERG FRED M · SONNENBERG FRED MAX
18 granted patents·2 pending applications·199 citations·filing 1973–2002
94Inventor score
Files withARCO CHEM TECH5STYROCHEM DELAWARE INC5ARCO CHEM CO2ATLANTIC RICHFIELD CO2FOSTER GRANT CO INC2
Top patents by PatentIndex Score
20 records- 0191US4017669AFunctionally substituted terpolymers and tetrapolymers of alpha-olefins and process for manufacturing functional substituted copolymersDU PONT·Filed 1973·Granted Apr 12, 1977·55 cites·16 claims
- 0281US4024092APolymer compositions containing stilbene halide additivesFOSTER GRANT CO INC·Filed 1976·Granted May 17, 1977·21 cites·10 claims
- 0366US6502621B2Processes for forming styrene/methyl methacrylate copolymersSTYROCHEM DELAWARE INC·Filed 2002·Granted Jan 7, 2003·8 cites·5 claims
- 0458US6710094B2Processes for preparing patterns for use in metal castingsSTYROCHEM DELAWARE INC·Filed 2002·Granted Mar 23, 2004·4 cites·14 claims
- 0558US4720429AFoam cups with enhanced coffee retentionATLANTIC RICHFIELD CO·Filed 1987·Granted Jan 19, 1988·16 cites·4 claims
- 0657US6360807B2Processes for forming styrenic copolymersSTYROCHEM DELAWARE INC·Filed 2001·Granted Mar 26, 2002·3 cites·13 claims
- 0757US4785022AUse of rubbery copolymers to decrease coffee leakage in foam cupsARCO CHEM CO·Filed 1987·Granted Nov 15, 1988·14 cites·4 claims
- 0855US4703065AFoam cups with enhanced coffee retentionATLANTIC RICHFIELD CO·Filed 1987·Granted Oct 27, 1987·14 cites·5 claims
- 0954US6497269B2Processes for forming styrenic copolymersSTYROCHEM DELAWARE INC·Filed 2002·Granted Dec 24, 2002·2 cites·12 claims
- 1052US5240967AMethod for improving the expandability of styrenic polymer particlesARCO CHEM TECH·Filed 1993·Granted Aug 31, 1993·12 cites·12 claims
- 1148US4980382AProcess for the preparation of expandable vinyl aromatic polymer particles containing hexabromocyclododecaneARCO CHEM TECH·Filed 1990·Granted Dec 25, 1990·10 cites·14 claims
- 1246US4761432ACoating of flame retardants onto a seed beadARCO CHEM CO·Filed 1987·Granted Aug 2, 1988·9 cites·52 claims
- 1342US4994499AMethod of adding flame retardant to vinyl aromatic polymers made in a one-step processARCO CHEM TECH·Filed 1990·Granted Feb 19, 1991·7 cites·20 claims
- 1441US2002081379A1Treatment for the reduction of carbon defects in the lost foam processFiled 2001·Application pending·0 cites
- 1541US2002028292A1Treatment for the reduction of carbon defects in the lost foam processFiled 2001·Application pending·0 cites
- 1638US6303664B1Treatment for reducing residual carbon in the lost foam processSTYROCHEM DELAWARE INC·Filed 1999·Granted Oct 16, 2001·11 cites·19 claims
- 1738US5030663AProcess for the preparation of fire-retardant expandable thermoplastic beadsARCO CHEM TECH·Filed 1990·Granted Jul 9, 1991·6 cites·11 claims
- 1835US4024119APolysulfone resins containing bibenzyl sulfone repeating unitsFOSTER GRANT CO INC·Filed 1976·Granted May 17, 1977·3 cites·18 claims
- 1930US4088683ABibenzyl-4-sulfonyl chlorideHOECHST CO AMERICAN·Filed 1976·Granted May 9, 1978·0 cites·1 claims
- 2028US5075346ATertiary ethers as blowing agents for foam polymer systemsARCO CHEM TECH·Filed 1990·Granted Dec 24, 1991·4 cites·10 claims
Join the waitlist — get patent alerts
Get an alert when Fred Sonnenberg 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 →