Inventor · disambiguated record
Tokuya Ohta
Also filed as: OHTA TOKUYA
34 granted patents·1,647 citations·filing 1978–1999
98Inventor score
Top patents by PatentIndex Score
34 records- 0199US4597794ARecording process and a recording liquid thereofCANON KK·Filed 1984·Granted Jul 1, 1986·413 cites·13 claims
- 0298US4368476AInk jet recording headCANON KK·Filed 1980·Granted Jan 11, 1983·161 cites·5 claims
- 0396US4426226ARecording liquidCANON KK·Filed 1982·Granted Jan 17, 1984·40 cites·4 claims
- 0496US4410899AMethod for forming liquid dropletsCANON KK·Filed 1981·Granted Oct 18, 1983·139 cites·5 claims
- 0595US4626284ARecording liquidMITSUBISHI CHEM IND·Filed 1984·Granted Dec 2, 1986·82 cites·18 claims
- 0694US5718793AImage forming process and printed articleCANON KK·Filed 1996·Granted Feb 17, 1998·71 cites·46 claims
- 0794US4295889ARecording liquid compositionCANON KK·Filed 1979·Granted Oct 20, 1981·25 cites·30 claims
- 0891US4281329ALiquid recording mediumCANON KK·Filed 1979·Granted Jul 28, 1981·43 cites·70 claims
- 0990US4517244ARecording medium and ink jet recording paperCANON KK·Filed 1982·Granted May 14, 1985·46 cites·15 claims
- 1089US4395287ALiquid recording materialCANON KK·Filed 1981·Granted Jul 26, 1983·54 cites·13 claims
- 1188US4683002ALiquid composition and method for recordingCANON KK·Filed 1985·Granted Jul 28, 1987·45 cites·17 claims
- 1288US4325735ARecording liquid compositionCANON KK·Filed 1980·Granted Apr 20, 1982·42 cites·19 claims
- 1386US5652610AInk tank, ink tank-integrated head cartridge having the tank and ink head constructed integrally, and ink jet printing apparatus having the ink tank or head cartridgeCANON KK·Filed 1994·Granted Jul 29, 1997·53 cites·23 claims
- 1486US4338611ALiquid jet recording headCANON KK·Filed 1980·Granted Jul 6, 1982·35 cites·8 claims
- 1586US4285575AImage display deviceCANON KK·Filed 1979·Granted Aug 25, 1981·41 cites·13 claims
- 1684US6022383AProcesses for coloring leather by an ink-jet printing method using anionic coloring agents and cationic agents, and leather products obtained therewithCANON KK·Filed 1997·Granted Feb 8, 2000·41 cites·32 claims
- 1783US5409529AInk, and ink-jet recording method and instrument using the sameCANON KK·Filed 1993·Granted Apr 25, 1995·45 cites·22 claims
- 1880US4395288ALiquid recording mediumCANON KK·Filed 1982·Granted Jul 26, 1983·31 cites·18 claims
- 1979US4841037AAmino sulfonaphtholtrisazo compounds and recording liquids containing the sameCANON KK·Filed 1986·Granted Jun 20, 1989·31 cites·17 claims
- 2077US5542970AMonoazo compound and recording liquid containing the sameCANON KK·Filed 1995·Granted Aug 6, 1996·16 cites·10 claims
- 2175US4373954ARecording liquid and method for producing the sameCANON KK·Filed 1981·Granted Feb 15, 1983·23 cites·16 claims
- 2272US4724001ADisazoic dye and recording liquid containing the sameCANON KK·Filed 1986·Granted Feb 9, 1988·24 cites·23 claims
- 2372US4655834ARecording processCANON KK·Filed 1985·Granted Apr 7, 1987·18 cites·13 claims
- 2472US4361842ARecording method using film forming liquid compositionCANON KK·Filed 1980·Granted Nov 30, 1982·22 cites·4 claims
- 2569US6325498B1Ink tank with ink absorbing memberCANON KK·Filed 1995·Granted Dec 4, 2001·19 cites·14 claims
- 2667US6109742AInk tank, head cartridge and ink jet printing apparatusCANON KK·Filed 1997·Granted Aug 29, 2000·17 cites·9 claims
- 2761US6357845B1Leather coloring process, leather coloring apparatus and colored leather produced by such processCANON KK·Filed 1999·Granted Mar 19, 2002·15 cites·6 claims
- 2859US6224200B1Ink tank with ink absorbing member having particular holes or slitsCANON KK·Filed 1997·Granted May 1, 2001·12 cites·3 claims
- 2959US6174053B1Ink tank, head cartridge and ink jet printing apparatusCANON KK·Filed 1998·Granted Jan 16, 2001·12 cites·19 claims
- 3058US6200676B1Ink jet recording mediumCANON KK·Filed 1993·Granted Mar 13, 2001·9 cites·14 claims
- 3151US4212518AImage display deviceCANON KK·Filed 1978·Granted Jul 15, 1980·11 cites·14 claims
- 3238US5447562AInk, ink-jet recording method making use of the ink, instrument provided with the ink and production method of the inkCANON KK·Filed 1994·Granted Sep 5, 1995·5 cites·40 claims
- 3338US4756757ARecording liquidCANON KK·Filed 1986·Granted Jul 12, 1988·3 cites·19 claims
- 3437US4655835AProcess for evaluating the solubility of a colorantCANON KK·Filed 1985·Granted Apr 7, 1987·3 cites·14 claims
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