Growing community of inventors

Eugene, OR, United States of America

Ray Allen Walker

Average Co-Inventor Count = 1.43

ph-index = 10

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 731

Ray Allen WalkerMichael L Bullock (3 patents)Ray Allen WalkerRobert E Haines (2 patents)Ray Allen WalkerWinthrop D Childers (1 patent)Ray Allen WalkerRhonda Lynn Wilson (1 patent)Ray Allen WalkerJeffrey Alan Gohman (1 patent)Ray Allen WalkerJeffrey L Thielman (1 patent)Ray Allen WalkerIsaac Farr (1 patent)Ray Allen WalkerEdward Zhihua Cai (1 patent)Ray Allen WalkerBrian L Helterline (1 patent)Ray Allen WalkerShane Shivji (1 patent)Ray Allen WalkerPeter Guy Howard (1 patent)Ray Allen WalkerMichael A Lind (1 patent)Ray Allen WalkerMichael S Ardito (1 patent)Ray Allen WalkerWilliam E Ortyn (1 patent)Ray Allen WalkerAndrew Joseph Zaremba (1 patent)Ray Allen WalkerMichael R Greenberg (1 patent)Ray Allen WalkerMarguerite E Blackman (1 patent)Ray Allen WalkerWayne Leaman Westly (1 patent)Ray Allen WalkerAndrew Joseph Zaremba (1 patent)Ray Allen WalkerWayne Leaman Westly (1 patent)Ray Allen WalkerRay Allen Walker (20 patents)Michael L BullockMichael L Bullock (43 patents)Robert E HainesRobert E Haines (34 patents)Winthrop D ChildersWinthrop D Childers (195 patents)Rhonda Lynn WilsonRhonda Lynn Wilson (46 patents)Jeffrey Alan GohmanJeffrey Alan Gohman (41 patents)Jeffrey L ThielmanJeffrey L Thielman (39 patents)Isaac FarrIsaac Farr (23 patents)Edward Zhihua CaiEdward Zhihua Cai (19 patents)Brian L HelterlineBrian L Helterline (17 patents)Shane ShivjiShane Shivji (14 patents)Peter Guy HowardPeter Guy Howard (13 patents)Michael A LindMichael A Lind (10 patents)Michael S ArditoMichael S Ardito (8 patents)William E OrtynWilliam E Ortyn (2 patents)Andrew Joseph ZarembaAndrew Joseph Zaremba (2 patents)Michael R GreenbergMichael R Greenberg (1 patent)Marguerite E BlackmanMarguerite E Blackman (1 patent)Wayne Leaman WestlyWayne Leaman Westly (1 patent)Andrew Joseph ZarembaAndrew Joseph Zaremba (1 patent)Wayne Leaman WestlyWayne Leaman Westly (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hewlett-packard Company (9 from 9,638 patents)

2. Hewlett-packard Development Company, L.p. (7 from 27,394 patents)

3. Other (1 from 832,680 patents)

4. Spectra-physics Gmbh (1 from 309 patents)

5. Psc Inc. (1 from 114 patents)

6. Spectra-physics Scanning Systems, Inc. (1 from 52 patents)


20 patents:

1. 10867002 - Real estate search interface and method

2. 7110127 - Method and apparatus for product regionalization

3. 6929343 - Fluid detection system

4. 6863377 - Method and apparatus for identifying a sales channel

5. 6739691 - Method and apparatus for preventing theft of replaceable printing components

6. 6685298 - Method and apparatus for preventing theft of replaceable printing components

7. 6676240 - Method and apparatus for transferring information between a replaceable consumable and a printing device

8. 6648434 - Digitally compensated pressure ink level sense system and method

9. 6513901 - Method and apparatus for determining drop volume from a drop ejection device

10. 6494562 - Method and apparatus for identifying a sales channel

11. 6431672 - Ink container having dual capillary members with differing capillary pressures for precise ink level sensing

12. 6345891 - Method and apparatus for specifying ink volume in a multichamber ink container

13. 6312074 - Method and apparatus for detecting fluid level in a fluid container

14. 6312106 - Method and apparatus for transferring information between a replaceable consumable and a printing device

15. 6302527 - Method and apparatus for transferring information between a printer portion and a replaceable printing component

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as of
12/6/2025
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