Assignee
HILTON DAVIS CHEMICAL CO
US·37 granted patents·224 citations·filing 1979–1989
Top patents by PatentIndex Score
37 records- 0190US4549192AElectrochromic marking systemsHILTON DAVIS CHEMICAL CO·Filed 1984·Granted Oct 22, 1985·22 cites·6 claims
- 0286US4561001AElectrochromic marking systemsHILTON DAVIS CHEMICAL CO·Filed 1984·Granted Dec 24, 1985·23 cites·8 claims
- 0383US4537971AProcess for preparing quinolinic acidHILTON DAVIS CHEMICAL CO·Filed 1983·Granted Aug 27, 1985·21 cites·8 claims
- 0480US4536367AMethod for sanitizing toiletsHILTON DAVIS CHEMICAL CO·Filed 1983·Granted Aug 20, 1985·11 cites·17 claims
- 0578US4632783ATriphenylmethane dyestuffsHILTON DAVIS CHEMICAL CO·Filed 1985·Granted Dec 30, 1986·11 cites·4 claims
- 0676US5491262ABis{[1-(2-A-2-B)ethenyl]}[2-R2 -4-X-phenyl-or 1-(2-R2 -4-X-phenyl)ethenyl]methanesHILTON DAVIS CHEMICAL CO·Filed 1989·Granted Feb 13, 1996·31 cites·9 claims
- 0773US4560746AUltrafiltration process for purification of dyes useful in foodstuffsHILTON DAVIS CHEMICAL CO·Filed 1984·Granted Dec 24, 1985·12 cites·17 claims
- 0865US4595768A3-(substituted phenyl)phthalidesHILTON DAVIS CHEMICAL CO·Filed 1984·Granted Jun 17, 1986·5 cites·19 claims
- 0959US4551740AElectrochromic and marking systemsHILTON DAVIS CHEMICAL CO·Filed 1984·Granted Nov 5, 1985·5 cites·6 claims
- 1056US4477676A4-(3-Indolyl)-2,3-dichloro-4-oxo-2-butenoic acidsHILTON DAVIS CHEMICAL CO·Filed 1982·Granted Oct 16, 1984·3 cites·5 claims
- 1156US4448722APhthalocyaninesHILTON DAVIS CHEMICAL CO·Filed 1982·Granted May 15, 1984·14 cites·10 claims
- 1255US4688059AMarking systemsHILTON DAVIS CHEMICAL CO·Filed 1986·Granted Aug 18, 1987·7 cites·5 claims
- 1355US4660060AImaging systems containing 3-(indol-3-yl)-3-(4-substituted aminophenyl)phthalidesHILTON DAVIS CHEMICAL CO·Filed 1985·Granted Apr 21, 1987·5 cites·6 claims
- 1455US4535172A3(Ether and thioether) 3-(4-dialkylaminophenyl) phthalidesHILTON DAVIS CHEMICAL CO·Filed 1982·Granted Aug 13, 1985·7 cites·7 claims
- 1553US4604458A3-substituted carbonyloxy-7-disubstituted amino-10-substituted carbonylphenothiazinesHILTON DAVIS CHEMICAL CO·Filed 1985·Granted Aug 5, 1986·6 cites·6 claims
- 1646US4732991ASubstituted phthalidesHILTON DAVIS CHEMICAL CO·Filed 1986·Granted Mar 22, 1988·2 cites·3 claims
- 1746US4652643A3-amido-7-disubstituted amino-10-carbonylphenothiazinesHILTON DAVIS CHEMICAL CO·Filed 1986·Granted Mar 24, 1987·3 cites·7 claims
- 1845US4570171AElectrochromic marking systemsHILTON DAVIS CHEMICAL CO·Filed 1984·Granted Feb 11, 1986·4 cites·5 claims
- 1940US4675389A(2-alkoxy-4-sulfonyl-5-alkylphenyl)azo-1-hydroxynaphthalene sulfonic acidsHILTON DAVIS CHEMICAL CO·Filed 1984·Granted Jun 23, 1987·2 cites·7 claims
- 2040US4539579ACompounds, processes and marking systemsHILTON DAVIS CHEMICAL CO·Filed 1982·Granted Sep 3, 1985·1 cites·16 claims
- 2140US4528136AProcess for preparing 2-[bis(aryl)methyl]benzoic acidsHILTON DAVIS CHEMICAL CO·Filed 1983·Granted Jul 9, 1985·1 cites·5 claims
- 2240US4451657A3,5- And 5,5-bis(3-indolyl)-2-(5H)furanonesHILTON DAVIS CHEMICAL CO·Filed 1979·Granted May 29, 1984·5 cites·11 claims
- 2339US4697018A9-julolidinyl derivatives and process of preparing themHILTON DAVIS CHEMICAL CO·Filed 1985·Granted Sep 29, 1987·1 cites·7 claims
- 2439US4515971A5'/6'-Carboxyfluorans and derivatives thereofHILTON DAVIS CHEMICAL CO·Filed 1981·Granted May 7, 1985·1 cites·7 claims
- 2538US4661605A3-(ether and thioether)-3-(indolyl)-phthalidesHILTON DAVIS CHEMICAL CO·Filed 1985·Granted Apr 28, 1987·1 cites·2 claims
- 2636US4618684ASubstituted indolesHILTON DAVIS CHEMICAL CO·Filed 1984·Granted Oct 21, 1986·0 cites·2 claims
- 2736US4507483A3-[(Substituted-amino)(thienyl)methyl]-1H-indolesHILTON DAVIS CHEMICAL CO·Filed 1983·Granted Mar 26, 1985·0 cites·1 claims
- 2834US4540790ACertain 4-substituted-2,6-bis(heteroaryl)pyridinesHILTON DAVIS CHEMICAL CO·Filed 1983·Granted Sep 10, 1985·0 cites·12 claims
- 2932US4558137ABis phenyl (2 carboxylic acid or ester indol-3-yl)methanesHILTON DAVIS CHEMICAL CO·Filed 1983·Granted Dec 10, 1985·0 cites·2 claims
- 3032US4494989ACompounds, processes and marking systemsHILTON DAVIS CHEMICAL CO·Filed 1982·Granted Jan 22, 1985·0 cites·2 claims
- 3131US4736027AIndole-phthalide derivativesHILTON DAVIS CHEMICAL CO·Filed 1986·Granted Apr 5, 1988·2 cites·4 claims
- 3231US4604461A5-substituted-9-disubstituted amino-12-substituted carbonylbenzo[a]phenoxazinesHILTON DAVIS CHEMICAL CO·Filed 1985·Granted Aug 5, 1986·0 cites·8 claims
- 3331US4595536ATriphenylmethane dyestuffHILTON DAVIS CHEMICAL CO·Filed 1985·Granted Jun 17, 1986·10 cites·3 claims
- 3431US4536570AN-Aminoalkylenesulfonamido substituted disazo colorantsHILTON DAVIS CHEMICAL CO·Filed 1982·Granted Aug 20, 1985·1 cites·2 claims
- 3530US4604462A4-substituted amido-8-disubstituted aminoimidazophenoxazinesHILTON DAVIS CHEMICAL CO·Filed 1985·Granted Aug 5, 1986·0 cites·9 claims
- 3630US4536368AMethod for sanitizing toiletsHILTON DAVIS CHEMICAL CO·Filed 1983·Granted Aug 20, 1985·7 cites·11 claims
- 3722US4639750AFluoran compounds and marking systemsHILTON DAVIS CHEMICAL CO·Filed 1986·Granted Jan 27, 1987·0 cites·23 claims
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