Inventor · disambiguated record
Masakazu Hiroi
Also filed as: HIROI MASAKAZU
51 granted patents·1 pending application·1,964 citations·filing 1983–2020
99Inventor score
Top patents by PatentIndex Score
52 records- 0199USRE36923ESheet staplerCANON KK·Filed 1995·Granted Oct 24, 2000·507 cites·30 claims
- 0297US5351112AOriginal feeding apparatus and image forming system with itCANON KK·Filed 1993·Granted Sep 27, 1994·69 cites·34 claims
- 0397US5350169ATray apparatusCANON KK·Filed 1994·Granted Sep 27, 1994·62 cites·4 claims
- 0495US5621501AOpening-closing mechanism for an automatic original feeding apparatusCANON KK·Filed 1994·Granted Apr 15, 1997·64 cites·20 claims
- 0594US6131898AImage forming apparatusCANON KK·Filed 1997·Granted Oct 17, 2000·68 cites·33 claims
- 0694US4883265ATray apparatusCANON KK·Filed 1988·Granted Nov 28, 1989·48 cites·11 claims
- 0792US5230457ASheet staplerCANON KK·Filed 1993·Granted Jul 27, 1993·74 cites·30 claims
- 0892US5215300ATray apparatusCANON KK·Filed 1991·Granted Jun 1, 1993·35 cites·32 claims
- 0992US4717134ASheet folding apparatusCANON KK·Filed 1986·Granted Jan 5, 1988·43 cites·8 claims
- 1091US4965629ASheet finisher with a binderCANON KK·Filed 1989·Granted Oct 23, 1990·37 cites·8 claims
- 1191US4770334AStapler apparatusCANON KK·Filed 1986·Granted Sep 13, 1988·62 cites·30 claims
- 1290US5455667ASheet handling apparatus with plural sheet storage unitsCANON KK·Filed 1993·Granted Oct 3, 1995·41 cites·24 claims
- 1390US4978045ASheet staplerCANON KK·Filed 1990·Granted Dec 18, 1990·69 cites·16 claims
- 1489US4928941ASheet sorter with staplerCANON KK·Filed 1988·Granted May 29, 1990·33 cites·15 claims
- 1588US5819151AOriginal feeding apparatus with rotary conveyor that releases original before readingCANON KK·Filed 1996·Granted Oct 6, 1998·35 cites·19 claims
- 1688US5579083AImage forming system with original feeding apparatusCANON KK·Filed 1995·Granted Nov 26, 1996·36 cites·7 claims
- 1788US5092509ASheet stapling apparatusCANON KK·Filed 1989·Granted Mar 3, 1992·34 cites·14 claims
- 1887US5552859ASheet supplying apparatus with means for rocking sheet stacking plateCANON KK·Filed 1995·Granted Sep 3, 1996·47 cites·33 claims
- 1987US5385340ASheet post-processing apparatusCANON KK·Filed 1994·Granted Jan 31, 1995·34 cites·21 claims
- 2086US5110104ASheet transporting device with carriage unitCANON KK·Filed 1990·Granted May 5, 1992·36 cites·16 claims
- 2184US9778610B2Image forming apparatusOKI DATA KK·Filed 2017·Granted Oct 3, 2017·2 cites·10 claims
- 2284US5035412AControl method for a sorterCANON KK·Filed 1989·Granted Jul 30, 1991·25 cites·19 claims
- 2381US5382016ASheet sorter with a stapler having a controlled sheet aligning memberCANON KK·Filed 1993·Granted Jan 17, 1995·27 cites·18 claims
- 2476US5269503ASheet processing apparatus with detachable staple cartridge and cartridge locking meansCANON KK·Filed 1993·Granted Dec 14, 1993·35 cites·16 claims
- 2576US4986520AControl method for sorter with staplerCANON KK·Filed 1990·Granted Jan 22, 1991·20 cites·6 claims
- 2676US4544148AAutomatic original conveying deviceCANON KK·Filed 1983·Granted Oct 1, 1985·31 cites·10 claims
- 2775US6021305ASheet original conveying apparatus for duplex copyingCANON KK·Filed 1997·Granted Feb 1, 2000·51 cites·11 claims
- 2874US5927706AAutomatic original supplying apparatusCANON KK·Filed 1996·Granted Jul 27, 1999·23 cites·32 claims
- 2972US5011130ASheet sorterCANON KK·Filed 1989·Granted Apr 30, 1991·17 cites·6 claims
- 3071US5799237AReading apparatus in which image reading means may be fixed to read and original being conveyedCANON KK·Filed 1997·Granted Aug 25, 1998·40 cites·56 claims
- 3170US4850581AAutomatic sheet supplying deviceCANON KK·Filed 1989·Granted Jul 25, 1989·16 cites·19 claims
- 3269US5546168AImage forming apparatus with selective operation in document-fix reading mode and document-move reading modeCANON KK·Filed 1993·Granted Aug 13, 1996·17 cites·10 claims
- 3369US4917364ASheet processing apparatusCANON KK·Filed 1988·Granted Apr 17, 1990·16 cites·36 claims
- 3468US6098977ASheet original conveying apparatus having original travel reverse apparatus and image forming apparatusCANON KK·Filed 1997·Granted Aug 8, 2000·35 cites·22 claims
- 3567US4930761AControl method for sorter with staplerCANON KK·Filed 1988·Granted Jun 5, 1990·22 cites·5 claims
- 3666US5645273ASheet original supply apparatus and image forming apparatus with itCANON KK·Filed 1995·Granted Jul 8, 1997·18 cites·13 claims
- 3766US5322274ASheet conveying apparatusCANON KK·Filed 1993·Granted Jun 21, 1994·15 cites·12 claims
- 3863US5152511ASheet sorter with staplerCANON KK·Filed 1991·Granted Oct 6, 1992·14 cites·41 claims
- 3961US5769411ASheet feeding apparatus with sheet separation featureCANON KK·Filed 1996·Granted Jun 23, 1998·13 cites·21 claims
- 4061US5255908ASheet sorter with control for continuous operationCANON KK·Filed 1992·Granted Oct 26, 1993·13 cites·22 claims
- 4159US5556251ASheet finisherCANON KK·Filed 1995·Granted Sep 17, 1996·18 cites·25 claims
- 4258US5316287ATray apparatusCANON KK·Filed 1992·Granted May 31, 1994·9 cites·7 claims
- 4357US5434661ASheet post-processing apparatus including offset means for selectively offsetting sheets discharged in one of plural bins relative to sheets discharged in the other of said plural binsCANON KK·Filed 1993·Granted Jul 18, 1995·11 cites·23 claims
- 4454US5104106ASheet sorter with staplerCANON KK·Filed 1990·Granted Apr 14, 1992·14 cites·57 claims
- 4552US9382081B2Image forming apparatusOKI DATA KK·Filed 2014·Granted Jul 5, 2016·0 cites·19 claims
- 4652US5345303ASheet sorter having aligning memberCANON KK·Filed 1991·Granted Sep 6, 1994·9 cites·12 claims
- 4751US11054781B2Image formation apparatus and medium conveyance control methodOKI DATA KK·Filed 2020·Granted Jul 6, 2021·0 cites·11 claims
- 4848US5289250ASheet post-processing apparatus having sheet alignerCANON KK·Filed 1991·Granted Feb 22, 1994·8 cites·14 claims
- 4946US11054785B2Image forming apparatusOKI DATA KK·Filed 2018·Granted Jul 6, 2021·0 cites·12 claims
- 5043US5812912AAutomatic original supplying apparatus having count modeCANON KK·Filed 1997·Granted Sep 22, 1998·6 cites·17 claims
Showing the top 50 of 52 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →