Assignee
RIEDEL DE HAEN AG
US·38 granted patents·520 citations·filing 1975–1998
Top patents by PatentIndex Score
38 records- 0197US3951293AGas-permeable, liquid-tight closureRIEDEL DE HAEN AG·Filed 1975·Granted Apr 20, 1976·123 cites·14 claims
- 0289US5354869A3,6-bis-(2'-methoxyphenyl)-2,5-dihydro-2,5-dimethyl-pyrrolo-(3,4-c)-pyrrole-1,4-dione compoundRIEDEL DE HAEN AG·Filed 1991·Granted Oct 11, 1994·37 cites·1 claims
- 0385US5747233AUse of indoleine-cyaninedisulphonic acid derivativesRIEDEL DE HAEN AG·Filed 1997·Granted May 5, 1998·14 cites·8 claims
- 0484US4093550AColumn for high pressure liquid chromatographyRIEDEL DE HAEN AG·Filed 1976·Granted Jun 6, 1978·55 cites·4 claims
- 0577US4302614A2,2-Bis[4-(2,3-dibromopropoxy)-3,5-dibromophenyl]-propane processRIEDEL DE HAEN AG·Filed 1980·Granted Nov 24, 1981·20 cites·12 claims
- 0674US4378972ATitration agent and method for using sameRIEDEL DE HAEN AG·Filed 1980·Granted Apr 5, 1983·22 cites·8 claims
- 0773US5125953AUse of a microbicidal agent for the treatment of concrete roof tilesRIEDEL DE HAEN AG·Filed 1990·Granted Jun 30, 1992·20 cites·4 claims
- 0871US5160666ALiquid preservativesRIEDEL DE HAEN AG·Filed 1990·Granted Nov 3, 1992·23 cites·8 claims
- 0967US5139955AReagent, cell and method for the coulometric determination of waterRIEDEL DE HAEN AG·Filed 1990·Granted Aug 18, 1992·31 cites·15 claims
- 1062US5480898AStorage-stable aqueous solutions of isothiazolin-3-onesRIEDEL DE HAEN AG·Filed 1994·Granted Jan 2, 1996·7 cites·16 claims
- 1162US4446075ASubstituted bromofluorobenzene derivatives and process for its manufactureRIEDEL DE HAEN AG·Filed 1981·Granted May 1, 1984·8 cites·6 claims
- 1260US4429048AAliphatic amine-containing Karl Fischer titration agent and method for using itRIEDEL DE HAEN AG·Filed 1982·Granted Jan 31, 1984·13 cites·14 claims
- 1355US4233456AProcess for the manufacture of optically active, optionally substituted 2-amino-2-phenylacetic acidRIEDEL DE HAEN AG·Filed 1978·Granted Nov 11, 1980·5 cites·9 claims
- 1454US5744638AProcess for the preparation of haloanthranilic acidsRIEDEL DE HAEN AG·Filed 1995·Granted Apr 28, 1998·6 cites·22 claims
- 1553US4167417AFluorescent inorganic pigmentRIEDEL DE HAEN AG·Filed 1978·Granted Sep 11, 1979·8 cites·4 claims
- 1651US4297390AProcess for the preparation of a red emitting phosphor coated with red iron oxide and its applicationRIEDEL DE HAEN AG·Filed 1979·Granted Oct 27, 1981·6 cites·11 claims
- 1750US4419529AProcess for the preparation of a 2-alkylphenolRIEDEL DE HAEN AG·Filed 1982·Granted Dec 6, 1983·7 cites·15 claims
- 1850US4097240AProcess for the production of a diagnostic agent for the detection of ketonesRIEDEL DE HAEN AG·Filed 1977·Granted Jun 27, 1978·12 cites·6 claims
- 1948US4740471AKarl Fischer titration agent and methodRIEDEL DE HAEN AG·Filed 1983·Granted Apr 26, 1988·8 cites·9 claims
- 2047US5401662AMethod and reagent for the determination of waterRIEDEL DE HAEN AG·Filed 1993·Granted Mar 28, 1995·16 cites·15 claims
- 2146US3989462ATest composition for detecting urobilinogenRIEDEL DE HAEN AG·Filed 1976·Granted Nov 2, 1976·10 cites·7 claims
- 2244US5567618AKarl Fischer reagentRIEDEL DE HAEN AG·Filed 1995·Granted Oct 22, 1996·10 cites·18 claims
- 2344US4263016ANon-toxic, active filler for grinding disks, its use and grinding disk containing sameRIEDEL DE HAEN AG·Filed 1979·Granted Apr 21, 1981·9 cites·9 claims
- 2443US4824892AUV light stabilizer based on benzophenoneRIEDEL DE HAEN AG·Filed 1987·Granted Apr 25, 1989·7 cites·7 claims
- 2541US4379709AProcess for disinfecting and preserving hides and skinsRIEDEL DE HAEN AG·Filed 1981·Granted Apr 12, 1983·8 cites·6 claims
- 2640US4335091AProcess for the manufacture of hydroxylammonium perchlorateRIEDEL DE HAEN AG·Filed 1981·Granted Jun 15, 1982·5 cites·2 claims
- 2735US4748126APyridine-free Karl-Fischer reagent and a process for the determination of water therewithRIEDEL DE HAEN AG·Filed 1981·Granted May 31, 1988·4 cites·14 claims
- 2835US4022964AIon exchanger on the basis of cellulose and process for its manufactureRIEDEL DE HAEN AG·Filed 1975·Granted May 10, 1977·2 cites·6 claims
- 2934US5466606AUse of N-methylformamide as solvent for the Karl Fischer titrationRIEDEL DE HAEN AG·Filed 1994·Granted Nov 14, 1995·5 cites·12 claims
- 3034US5292413ACatholyte for the Karl Fischer coulometric water determinationRIEDEL DE HAEN AG·Filed 1992·Granted Mar 8, 1994·5 cites·10 claims
- 3134US4109080AIon exchange compounds on cellulose basis and process for the manufacture thereofRIEDEL DE HAEN AG·Filed 1977·Granted Aug 22, 1978·4 cites·3 claims
- 3234US4104189ACuring agent for polysulfide-polymer compositionsRIEDEL DE HAEN AG·Filed 1976·Granted Aug 1, 1978·4 cites·8 claims
- 3333US5336818AProcess for the preparation of substantially fluorinated alkyl bromidesRIEDEL DE HAEN AG·Filed 1991·Granted Aug 9, 1994·1 cites·19 claims
- 3433US4285884AProcess for resolution of racemic DL-α-aminocarboxylic acidsRIEDEL DE HAEN AG·Filed 1978·Granted Aug 25, 1981·1 cites·23 claims
- 3528US5430202AProcess for the preparation of substantially fluorinated alkyl bromidesRIEDEL DE HAEN AG·Filed 1994·Granted Jul 4, 1995·0 cites·17 claims
- 3627US6261753B1Use of indolenine-cyaninedisulphonic acid derivativesRIEDEL DE HAEN AG·Filed 1998·Granted Jul 17, 2001·1 cites·2 claims
- 3727US4370148AChlorofluoroferrate(II,III), a process for its manufacture, its use and a grinding wheel containing chlorofluoroferrate(II,III)RIEDEL DE HAEN AG·Filed 1981·Granted Jan 25, 1983·3 cites·8 claims
- 3810US5597701AProcess for determining androstenone contents in adipose tissuesRIEDEL DE HAEN AG·Filed 1993·Granted Jan 28, 1997·0 cites·14 claims
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