Inventor · disambiguated record
Helen H. Ong
Also filed as: CRICHLOW CHARLES A · ONG HELEN H · ONG HELEN HU
53 granted patents·371 citations·filing 1974–1995
98Inventor score
Top patents by PatentIndex Score
53 records- 0198US4198417APhenoxyphenylpiperidinesHOECHST CO AMERICAN·Filed 1979·Granted Apr 15, 1980·85 cites·74 claims
- 0297US4241071AAntidepressant (α-phenyl-2-tolyl)azacycloalkanesHOECHST CO AMERICAN·Filed 1979·Granted Dec 23, 1980·67 cites·24 claims
- 0391US4409229AAntidepressive and tranquilizing substituted 1,3-dihydrospiro[benzo(c)thiophene]sHOECHST ROUSSEL PHARMA·Filed 1981·Granted Oct 11, 1983·25 cites·37 claims
- 0491US4198419APhenylthiophenylpiperidinesHOECHST CO AMERICAN·Filed 1979·Granted Apr 15, 1980·24 cites·73 claims
- 0590US4209625ASpiro[indoline-3,4'-piperidine]sHOECHST CO AMERICAN·Filed 1978·Granted Jun 24, 1980·18 cites·29 claims
- 0683US4436748ABenzo[b]thiophenesHOECHST ROUSSEL PHARMA·Filed 1981·Granted Mar 13, 1984·23 cites·110 claims
- 0779US4307235ASpiro[indoline-3,4'-piperidine]sHOECHST CO AMERICAN·Filed 1980·Granted Dec 22, 1981·11 cites·7 claims
- 0873US4524207AProcess for preparing substituted 1,3-dihydrospiro[benzo(c)thiophene]sHOECHST ROUSSEL PHARMA·Filed 1983·Granted Jun 18, 1985·8 cites·1 claims
- 0971US4743601ADihydro-1,4-oxazino(2,3-C)quinolinesHOECHST ROUSSEL PHARMA·Filed 1987·Granted May 10, 1988·10 cites·25 claims
- 1069US4771052ATetrahydropyrido[3',4':4,5]pyrrolo[2,3-c]quinolines and their use as hypotensive agentsHOECHST ROUSSEL PHARMA·Filed 1987·Granted Sep 13, 1988·8 cites·25 claims
- 1166US4345081ASpiro[indoline-3,4'-piperidine]sHOECHST CO AMERICAN·Filed 1980·Granted Aug 17, 1982·5 cites·34 claims
- 1265US4379933AProcess for preparing spiro[indoline-3,4'-piperidine]sHOECHST CO AMERICAN·Filed 1981·Granted Apr 12, 1983·5 cites·3 claims
- 1362US4728651AAntihypertensive thieno-isoxazoles and -pyrazolesHOECHST ROUSSEL PHARMA·Filed 1985·Granted Mar 1, 1988·12 cites·90 claims
- 1461US4769472AIntermediate thieno-isoxazoles and -pyrazoles and 5-benzoyl-4-bromothiophenesHOECHST ROUSSEL PHARMA·Filed 1987·Granted Sep 6, 1988·6 cites·58 claims
- 1560US3957828A3-Aminoalkyl-1,3-dihydro-3-phenylspiro[isobenzofurans]HOECHST CO AMERICAN·Filed 1974·Granted May 18, 1976·4 cites·6 claims
- 1658US5100891ASubstituted 1,2,3,4-tetrahydrocyclopent[b]indoles, 1,2,3,3a,4,8a-hexahydrocyclopent[B]indoles and related compoundsHOECHST ROUSSEL PHARMA·Filed 1991·Granted Mar 31, 1992·6 cites·10 claims
- 1757US5130315A1-piperazinyl-2-butenes and -2-butynesHOECHST ROUSSEL PHARMA·Filed 1991·Granted Jul 14, 1992·4 cites·25 claims
- 1857US4999358A(1,2,3,4-tetrahydro-9-acridinimino)cyclohexane carboxylic acid and related compoundsHOECHST ROUSSEL PHARMA·Filed 1989·Granted Mar 12, 1991·4 cites·20 claims
- 1957US4198420ASpiro[dibenz(b,f)thiepin-piperidine]sHOECHST CO AMERICAN·Filed 1979·Granted Apr 15, 1980·5 cites·54 claims
- 2056US4668695AAminoalkylthiodibenzothiepinsHOECHST ROUSSEL PHARMA·Filed 1983·Granted May 26, 1987·3 cites·20 claims
- 2156US4477667ASpiro[indoline-3,4'-piperidine]s and related compoundsHOECHST CO AMERICAN·Filed 1981·Granted Oct 16, 1984·3 cites·1 claims
- 2255US5192789ASubstituted 1,2,3,4-tetrahydrocyclopent[b]indoles, 1,2,3,3a,4,8a-hexahydrocyclopent[b]indoles and related compoundsHOECHST ROUSSEL PHARMA·Filed 1992·Granted Mar 9, 1993·5 cites·9 claims
- 2354US5472975ASubstituted 1,2,3,4-tetrahydrocyclopent[b]indoles, 1,2,3,3a,4,8a-hexahydrocyclopent[b]indoles and related compoundsHOECHST ROUSSEL PHARMA·Filed 1994·Granted Dec 5, 1995·3 cites·4 claims
- 2450US5514700ASubstituted 1,2,3,4-tetrahydrocyclopent b!indoles, compositions and useHOECHST ROUSSEL PHARMA·Filed 1995·Granted May 7, 1996·3 cites·15 claims
- 2550US5440048A1-piperazinyl-2-butenes and -2-butynesHOECHST ROUSSEL PHARMA·Filed 1994·Granted Aug 8, 1995·2 cites·2 claims
- 2649US5334715A1-piperazinyl-2-butenes and -2-butynesHOECHST ROUSSEL PHARMA·Filed 1993·Granted Aug 2, 1994·2 cites·6 claims
- 2749US5298626ASelect cyclopent[b]indolesHOECHST ROUSSEL PHARMA·Filed 1992·Granted Mar 29, 1994·2 cites·3 claims
- 2849US4079141AAzabicycloalkanesHOECHST CO AMERICAN·Filed 1976·Granted Mar 14, 1978·2 cites·24 claims
- 2947US4198418ASpiro[dibenz(b,f)oxepin-piperidine]sHOECHST CO AMERICAN·Filed 1979·Granted Apr 15, 1980·3 cites·54 claims
- 3046US5149813AProcess for (1,2,3,4-tetrahydro-9-acridinimino)cyclohexane carboxylic acid and related compoundsHOECHST ROUSSEL PHARMA·Filed 1992·Granted Sep 22, 1992·2 cites·1 claims
- 3144US5140027AAminoalkylthiodibenzoxepins and pharmaceutical useHOECHST ROUSSEL PHARMA·Filed 1990·Granted Aug 18, 1992·2 cites·20 claims
- 3243US5216178AProcess of reducing olefinsHOECHST ROUSSEL PHARMA·Filed 1991·Granted Jun 1, 1993·2 cites·10 claims
- 3342US4528399ABenzo[b]thiophenes intermediatesHOECHST ROUSSEL PHARMA·Filed 1983·Granted Jul 9, 1985·1 cites·13 claims
- 3441US4766143AHaloalkylthiodibenzothiepinsHOECHST ROUSSEL PHARMA·Filed 1987·Granted Aug 23, 1988·1 cites·6 claims
- 3541US4408050ASpiro(indoline-3,4'-piperidine) and related compoundsHOECHST CO AMERICAN·Filed 1981·Granted Oct 4, 1983·1 cites·1 claims
- 3640US4414219AAntidepressant (α-phenyl-2-tolyl)azacycloalkanols and derivatives thereofHOECHST CO AMERICAN·Filed 1980·Granted Nov 8, 1983·1 cites·50 claims
- 3740US4311703AAntidepressant and tranquilizing (α-phenyl-2-tolyl)-azacycloalkenesHOECHST CO AMERICAN·Filed 1980·Granted Jan 19, 1982·1 cites·25 claims
- 3839US4837227AAminoalkylthiodibenzoxepins and pharmaceutical useHOECHST ROUSSEL PHARMA·Filed 1985·Granted Jun 6, 1989·1 cites·52 claims
- 3937US4942168AHydroxyquinoline amines, and method of enhancing memory in mammalsHOECHST ROUSSEL PHARMA·Filed 1988·Granted Jul 17, 1990·1 cites·12 claims
- 4034US5126449A(1,2,3,4-Tetrahydro-9-acridinimino)cyclohexane carboxylic acid and related compoundsHOECHST ROUSSEL PHARMA·Filed 1991·Granted Jun 30, 1992·0 cites·1 claims
- 4133US5089615ACompound, 5,6,7,8-tetrahydro-1-(1,2,3,4-acridin-9-yl)-2H-3,1-benzoxazine-2,4-(1H)dioneHOECHST ROUSSEL PHARMA·Filed 1991·Granted Feb 18, 1992·0 cites·1 claims
- 4233US5006664AAminoalkylthiodibenzothiepins and related compoundsHOECHST ROUSSEL PHARMA·Filed 1989·Granted Apr 9, 1991·0 cites·4 claims
- 4333US4775682AHaloalkylthiodibenzothiepinsHOECHST ROUSSEL PHARMA·Filed 1987·Granted Oct 4, 1988·0 cites·8 claims
- 4433US4672138APhenyl substituted carbamothioic acid estersHOECHST ROUSSEL PHARMA·Filed 1986·Granted Jun 9, 1987·0 cites·4 claims
- 4533US4537976ABenzo[b]thiophenesHOECHST ROUSSEL PHARMA·Filed 1983·Granted Aug 27, 1985·0 cites·19 claims
- 4632US4775683AAminoalkylthiodibenzothiepinsHOECHST ROUSSEL PHARMA·Filed 1987·Granted Oct 4, 1988·0 cites·18 claims
- 4732US4775672AAminoalkylthiodibenzothiepinsHOECHST ROUSSEL PHARMA·Filed 1987·Granted Oct 4, 1988·0 cites·10 claims
- 4832US4771069AAminoalkylthiodibenzothiepinsHOECHST ROUSSEL PHARMA·Filed 1987·Granted Sep 13, 1988·0 cites·6 claims
- 4932US4379932AProcess for preparing spiro[indoline-3,4'-piperidine]sHOECHST CO AMERICAN·Filed 1981·Granted Apr 12, 1983·0 cites·3 claims
- 5030US5194436A1-piperazinyl-2-butenes and -2-butynesHOECHST ROUSSEL PHARMA·Filed 1992·Granted Mar 16, 1993·0 cites·12 claims
Showing the top 50 of 53 patent records by PatentIndex Score.
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