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USPTO Patent Rankings Data through Dec 31, 2025
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RW

Ray A. Walker — 20 Patents

HP: 16 patents #1,072 of 16,619Top 7%
PSPsc: 1 patents #35 of 61Top 60%
SPSpectra-Physics: 1 patents #113 of 257Top 45%
SSSpectra-Physics Scanning Systems: 1 patents #39 of 56Top 70%
Eugene, OR: #46 of 1,137 inventorsTop 5%
Oregon: #2,168 of 28,073 inventorsTop 8%
Overall (All Time): #214,803 of 4,157,543Top 6%
20 Patents All Time
Ray A. Walker has been granted 20 US patents. The first was granted in 1987 and the most recent in December 2020. Ray A. Walker ranks #214,803 of 4,157,543 US inventors in our database (top 5.2%). Patent records list Ray A. Walker in Eugene, OR, US.

Patents per Year

Patents granted per year, 1987 to 2020Bar chart with a peak of 5 patents in 2001.peak 51987: 1 patents19871994: 1 patents19941999: 1 patents19992001: 5 patents20012002: 3 patents20022003: 2 patents20032004: 3 patents20042005: 2 patents20052006: 1 patents20062020: 1 patents2020

Issued Patents All Time

Showing 1–20 of 20 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
10867002 Real estate search interface and method — 2020-12-15
7110127 Method and apparatus for product regionalization Andrew Zaremba, Wayne Leaman Westly 2006-09-19 $23,827,000
6929343 Fluid detection system Isaac Farr, Edward Cai, Shane Shivji 2005-08-16 $12,272,000
6863377 Method and apparatus for identifying a sales channel Robert E. Haines, Michael L. Bullock 2005-03-08 $8,130,000
6739691 Method and apparatus for preventing theft of replaceable printing components — 2004-05-25 $10,520,000
6685298 Method and apparatus for preventing theft of replaceable printing components — 2004-02-03 $16,763,000
6676240 Method and apparatus for transferring information between a replaceable consumable and a printing device — 2004-01-13 $13,381,000
6648434 Digitally compensated pressure ink level sense system and method Rhonda L. Wilson 2003-11-18 $9,447,000
6513901 Method and apparatus for determining drop volume from a drop ejection device — 2003-02-04 $20,828,000
6494562 Method and apparatus for identifying a sales channel Robert E. Haines, Michael L. Bullock 2002-12-17 $24,613,000
6431672 Ink container having dual capillary members with differing capillary pressures for precise ink level sensing Michael S. Ardito, Jeffrey Thielman 2002-08-13 $13,664,000
6345891 Method and apparatus for specifying ink volume in a multichamber ink container Winthrop D. Childers, Michael L. Bullock, Brian L. Helterline 2002-02-12 $43,125,000
6312074 Method and apparatus for detecting fluid level in a fluid container — 2001-11-06 $13,415,000
6312106 Method and apparatus for transferring information between a replaceable consumable and a printing device — 2001-11-06 $13,415,000
6302527 Method and apparatus for transferring information between a printer portion and a replaceable printing component — 2001-10-16 $17,839,000
6274880 Fluid level sensing system and method having controlled surface pairs — 2001-08-14 $26,550,000
6247775 Method and apparatus for detecting ink level — 2001-06-19 $27,481,000
5883370 Automated method for filling drug prescriptions Marguerite E. Blackman 1999-03-16 $1,761,000
5327451 Laser diode assembly for laser scanner system Jeffrey A. Gohman, Michael A. Lind, Peter Howard, William E. Ortyn, Michael Greenberg 1994-07-05
4690556 Capillary bore straightness inspection — 1987-09-01

Frequent Collaborators

Michael L. Bullock3 shared
Robert E. Haines2 shared
Michael S. Ardito1 shared
Edward Cai1 shared
Michael A. Lind1 shared
Jeffrey Thielman1 shared

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