Inventor · disambiguated record
Hiroko Ishikawa
Also filed as: ISHIKAWA HIROKO
17 granted patents·4 pending applications·66 citations·filing 1991–2022
92Inventor score
Files withHITACHI CHEMICAL CO LTD7ISHIKAWA HIROKO6BROTHER IND LTD2TOSHIBA KK2HITACHI CHEMICAL COMPANY CO LT1
Top patents by PatentIndex Score
21 records- 0188US8727347B2Sheet feeding apparatusISHIKAWA HIROKO·Filed 2012·Granted May 20, 2014·8 cites·17 claims
- 0282US8284465B2Image scanner, and method and computer readable medium thereforISHIKAWA HIROKO·Filed 2009·Granted Oct 9, 2012·8 cites·18 claims
- 0376US8085414B2Image forming device configured to execute scan-to-memory and direct print functions when connected to an external deviceISHIKAWA HIROKO·Filed 2008·Granted Dec 27, 2011·5 cites·20 claims
- 0475US5304445APhthalocyanine composition, process for preparing the same and electrophotographic photoreceptor using the sameHITACHI CHEMICAL CO LTD·Filed 1993·Granted Apr 19, 1994·10 cites·4 claims
- 0564US8970927B2Image reading apparatusBROTHER IND LTD·Filed 2013·Granted Mar 3, 2015·1 cites·16 claims
- 0664US8928959B2Image reading apparatus facilitating jam clearISHIKAWA HIROKO·Filed 2014·Granted Jan 6, 2015·1 cites·10 claims
- 0763US8411336B2Image reader, image forming device having the same, and computer-readable storage medium for the sameISHIKAWA HIROKO·Filed 2010·Granted Apr 2, 2013·1 cites·15 claims
- 0863US2024191179A1Method for suppressing production of degradation productsKYOWA KIRIN CO LTD·Filed 2022·Application pending·0 cites
- 0962US5352834AElectrophotographic memberHITACHI CHEMICAL CO LTD·Filed 1992·Granted Oct 4, 1994·10 cites·5 claims
- 1051US5494767APhthalocyanine composition, process for preparing the same and electrophotographic photoreceptor using the sameHITACHI CHEMICAL COMPANY CO LT·Filed 1994·Granted Feb 27, 1996·3 cites·10 claims
- 1150US2009021760A1Image scanning apparatusBROTHER IND LTD·Filed 2008·Application pending·0 cites
- 1249US8184306B2Operate light source of reading unit of a multifunction peripheral device according to valid instructive keysSUZUKI NOBUHIKO·Filed 2008·Granted May 22, 2012·0 cites·14 claims
- 1349US5160487AElectrophotographic memberHITACHI CHEMICAL CO LTD·Filed 1991·Granted Nov 3, 1992·6 cites·14 claims
- 1448US9360595B2Antifog optical article and manufacturing method thereofISHIKAWA HIROKO·Filed 2012·Granted Jun 7, 2016·0 cites·6 claims
- 1545US2015061539A1Electronic device, computer program product, and control systemTOSHIBA KK·Filed 2014·Application pending·0 cites
- 1645US2015066232A1Information display device, computer program product, and display systemTOSHIBA KK·Filed 2014·Application pending·0 cites
- 1743US5626999APhthalocyanine composition, process for preparing the same and electrophotographic photoreceptor using the sameHITACHI CHEMICAL CO LTD·Filed 1995·Granted May 6, 1997·7 cites·4 claims
- 1843US5272030AElectrophotographic member comprising enamine derivativesHITACHI CHEMICAL CO LTD·Filed 1991·Granted Dec 21, 1993·2 cites·5 claims
- 1939US5382687AEnamine derivativesHITACHI CHEMICAL CO LTD·Filed 1993·Granted Jan 17, 1995·1 cites·4 claims
- 2038US5403958AElectrophotographic memberHITACHI CHEMICAL CO LTD·Filed 1993·Granted Apr 4, 1995·3 cites·5 claims
- 2136US8643889B2Image readerOOSAKI MASAYOSHI·Filed 2011·Granted Feb 4, 2014·0 cites·9 claims
Join the waitlist — get patent alerts
Get an alert when Hiroko Ishikawa 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 →