Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
NK

Naoto Kawamura — 114 Patents

Canon: 58 patents #514 of 19,416Top 3%
HP: 56 patents #124 of 16,619Top 1%
KCKokusai Denshin Denwa Co.: 2 patents #159 of 382Top 45%
Overall (All Time): #11,094 of 4,157,543Top 1%
114 Patents All Time
Naoto Kawamura has been granted 114 US patents while listed as an inventor at Canon. The first was granted in 1980 and the most recent in May 2013. Naoto Kawamura ranks #11,094 of 4,157,543 US inventors in our database (top 0.27%). Patent records list Naoto Kawamura in Inagi, OR, JP.

Patents per Year

Patents granted per year, 1981 to 2013Bar chart with a peak of 10 patents in 2003.peak 101981: 4 patents19811982: 1 patents1983: 2 patents1984: 1 patents19841985: 4 patents1986: 2 patents1987: 3 patents19871988: 4 patents1989: 5 patents1990: 3 patents19901991: 3 patents1992: 2 patents1993: 4 patents19931994: 1 patents1996: 2 patents1997: 5 patents19971998: 4 patents1999: 2 patents2000: 8 patents20002001: 5 patents2002: 7 patents2003: 10 patents20032004: 7 patents2005: 8 patents2006: 8 patents20062007: 1 patents2008: 1 patents2009: 1 patents20092012: 3 patents2013: 2 patents2013

Issued Patents All Time

Showing 1–25 of 114 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
8441688 Image processing apparatus and method thereof 2013-05-14 $72,000
8390891 Image processing apparatus and method for quantizing pixel of interest by error diffusion method 2013-03-05 $59,000
8279489 Image processing apparatus and control method thereof for converting multilevel image data to binary data using an error diffusion method 2012-10-02 $96,000
8169664 Image processing apparatus and method for quantizing pixel of interest by error diffusion method 2012-05-01 $96,000
8149463 Information processing apparatus, image processing apparatus and method thereof, which create and use a halftone screen 2012-04-03 $82,000
7478476 Methods of fabricating fit firing chambers of different drop wights on a single printhead 2009-01-20 $27,480,000
7467862 Interconnect circuit Erik D. Ness, William Eaton, Charles R. Headrick 2008-12-23 $71,881,000
7204933 Method of forming pillars in a fully integrated thermal inkjet printhead David R. Thomas, David J. Waller, Timothy L. Weber 2007-04-17 $23,197,000
7137690 Interconnect circuit Erik D. Ness, William Eaton, Charles R. Headrick 2006-11-21 $19,526,000
7111929 Magnetically-actuated fluid control valve Storrs T. Hoen, Jonah A. Harley 2006-09-26 $17,077,000
7101029 Interconnect circuit Erik D. Ness, William Eaton, Charles R. Headrick 2006-09-05 $6,395,000
7097271 Printhead calibration Volker Smektala, Erik D. Ness 2006-08-29 $14,237,000
7083267 Slotted substrates and methods and systems for forming same Mark H. MacKenzie 2006-08-01 $15,312,000
7056444 Method of forming pillars in a fully integrated thermal inkjet printhead David R. Thomas, David Walter, Timothy L. Weber 2006-06-06 $8,039,000
7032994 Interconnect circuit Steve O'Hara 2006-04-25 $11,316,000
6997538 Inkjet printing with air current disruption John Paul Harmon 2006-02-14 $14,109,000
6966112 Methods of fabricating FIT firing chambers of different drop weights on a single printhead 2005-11-22 $15,281,000
6962406 Fluid ejection device and method of manufacture Marvin Glenn Wong 2005-11-08 $16,653,000
6918657 Fully integrated thermal inkjet printhead having etched back PSG layer Colin C. Davis, Timothy L. Weber, Kenneth E. Trueba, John Paul Harmon, David R. Thomas 2005-07-19 $10,604,000
6911155 Methods and systems for forming slots in a substrate Michael D. Miller, Michael Hager, Roberto A. Pugliese, Ronald L. Enck, Susanne Kumpf +2 more 2005-06-28 $13,758,000
6905619 Method of forming pillars in a fully integrated thermal inkjet printhead David R. Thomas, David J. Waller, Timothy L. Weber 2005-06-14 $12,056,000
6902259 Direct imaging polymer fluid jet orifice Chien-Hua Chen, Donald E. Wenzel, Qin Liu, Colby Vooren, Colin C. Davis +3 more 2005-06-07 $9,928,000
6890068 Ink containment system for an ink-jet pen Timothy L. Weber 2005-05-10 $10,962,000
6886905 Inkjet printing with air movement system David K. McElfresh, Satya Prakash 2005-05-03 $8,877,000
6783689 Method of forming pillars in a fully integrated thermal inkjet printhead David R. Thomas, David J. Waller, Timothy L. Weber 2004-08-31 $7,969,000