Inventor · disambiguated record
Ian J. Fletcher
Also filed as: FLETCHER IAN J · FLETCHER IAN JOHN
34 granted patents·295 citations·filing 1975–2007
97Inventor score
Top patents by PatentIndex Score
34 records- 0193US4435003AChromogenic quinazolinesCIBA GEIGY CORP·Filed 1982·Granted Mar 6, 1984·27 cites·6 claims
- 0290US6255483B1Biphenyl-substituted triazinesCIBA SC HOLDING AG·Filed 1999·Granted Jul 3, 2001·77 cites·8 claims
- 0389US4157443AV-Triazolyl-[4,5-d]-pyrimidinesCIBA GEIGY CORP·Filed 1977·Granted Jun 5, 1979·13 cites·5 claims
- 0486US6468958B2Biphenyl-substituted triazinesCIBA SC HOLDING AG·Filed 2001·Granted Oct 22, 2002·13 cites·8 claims
- 0581US6919454B2Biphenyl-substituted triazinesCIBA SC HOLDING AG·Filed 2004·Granted Jul 19, 2005·8 cites·9 claims
- 0680US5329006AChromogenic lactam compounds, their preparation and their useCIBA GEIGY CORP·Filed 1991·Granted Jul 12, 1994·21 cites·4 claims
- 0779US6841670B2Biphenyl-substituted triazinesCIBA SC HOLDING AG·Filed 2002·Granted Jan 11, 2005·7 cites·7 claims
- 0877US4625027ABisquinazolines useful in color former systemsCIBA GEIGY CORP·Filed 1983·Granted Nov 25, 1986·8 cites·3 claims
- 0975US5426192AChromogenic lactam compounds, their preparation and their useCIBA GEIGY CORP·Filed 1994·Granted Jun 20, 1995·12 cites·8 claims
- 1074US4508897APreparation of chromogenic azaphthalidesCIBA GEIGY CORP·Filed 1983·Granted Apr 2, 1985·12 cites·19 claims
- 1172US4480096AChromogenic quinazolinesCIBA GEIGY CORP·Filed 1981·Granted Oct 30, 1984·24 cites·8 claims
- 1265US4236003AV-Triazolyl-[4,5-d]-pyrimidH.CIBA GEIGY CORP·Filed 1979·Granted Nov 25, 1980·3 cites·5 claims
- 1364US4562449AChromogenic dihydroquinazolinesCIBA GEIGY CORP·Filed 1984·Granted Dec 31, 1985·6 cites·6 claims
- 1463US4705775ARecording material employing chromogenic bisquinazolinesCIBA GEIGY CORP·Filed 1986·Granted Nov 10, 1987·5 cites·24 claims
- 1562US4668790AChromogenic dihydrofuropyridinonesCIBA GEIGY CORP·Filed 1982·Granted May 26, 1987·9 cites·8 claims
- 1662US4506073AChromenoazaindolizine compoundsCIBA GEIGY CORP·Filed 1983·Granted Mar 19, 1985·5 cites·7 claims
- 1760US7566349B2Amphoteric fluorescent whitening agentsCIBA SC HOLDING AG·Filed 2007·Granted Jul 28, 2009·0 cites·3 claims
- 1859US4766211AChromogenic quinazolinesCIBA GEIGY CORP·Filed 1986·Granted Aug 23, 1988·9 cites·16 claims
- 1959US4302586AV-Triazolyl-[4,5-d]-pyrimidinesCIBA GEIGY CORP·Filed 1980·Granted Nov 24, 1981·4 cites·5 claims
- 2057US7247174B2Amphoteric fluorescent whitening agentsCIBA SC HOLDING AG·Filed 2003·Granted Jul 24, 2007·2 cites·5 claims
- 2154US4146500ATriazole compoundsCIBA GEIGY CORP·Filed 1975·Granted Mar 27, 1979·3 cites·12 claims
- 2252US4587343AChromogenic 3,3-bisindolyl-4-azaphthalidesCIBA GEIGY CORP·Filed 1984·Granted May 6, 1986·5 cites·8 claims
- 2350US4587539AChromogenic dihydrofuropyridinonesCIBA GEIGY CORP·Filed 1985·Granted May 6, 1986·4 cites·13 claims
- 2448US4668966AAliphatic bridged chromogenic bisquinazolines substituted with phenylamine or phenyl-containing heterobicyclic radicalsCIBA GEIGY CORP·Filed 1985·Granted May 26, 1987·5 cites·24 claims
- 2545US4695636AChromogenic dihydrofuropyridinonesCIBA GEIGY CORP·Filed 1986·Granted Sep 22, 1987·3 cites·6 claims
- 2643US4705776ARecording material containing chromogenic 3,3-bisindolyl-4-azaphthalidesCIBA GEIGY CORP·Filed 1985·Granted Nov 10, 1987·2 cites·6 claims
- 2741US4933448AChromogenic lactone compounds of benzopyrano-2H-pyrazolesCIBA GEIGY CORP·Filed 1989·Granted Jun 12, 1990·3 cites·12 claims
- 2839US4675407ARing-substituted 4-azaphthalidesCIBA GEIGY CORP·Filed 1986·Granted Jun 23, 1987·2 cites·16 claims
- 2936US4555569AChromogenic quinazolinesCIBA GEIGY CORP·Filed 1984·Granted Nov 26, 1985·2 cites·14 claims
- 3036US4331805AV-Triazolyl-[4,5-d]-pyrimidinesCIBA GEIGY CORP·Filed 1980·Granted May 25, 1982·0 cites·4 claims
- 3133US5162550ABisphthalide lactones, their preparation and the use thereof in recording materialsCIBA GEIGY CORP·Filed 1990·Granted Nov 10, 1992·1 cites·10 claims
- 3232US4138429AProcess for the manufacture of o-phenylenediacetonitrileCIBA GEIGY CORP·Filed 1977·Granted Feb 6, 1979·0 cites·4 claims
- 3329US4503227AChromogenic dihydroquinazolinesCIBA GEIGY CORP·Filed 1983·Granted Mar 5, 1985·0 cites·6 claims
- 3427US5952524AProcessCIBA SC HOLDING AG·Filed 1998·Granted Sep 14, 1999·0 cites·25 claims
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