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For the Inventor, By the Inventor

Park Ridge, IL, United States of America

James A Grichnik

This inventor holds 4 USPTO granted patents. Top assignees: Varian Associates, Inc., Other. Active years: 1976-2022.

USPTO Granted Patents = 4

% Patents Active = 75.0

Average Co-Inventor Count = 1.2

ph-index = 2

Forward Citations = 27(Granted Patents)


Location History:

  • Park Ridge, IL (US) (1976 - 1977)
  • Hawthorn Woods, IL (US) (2021 - 2022)

Company Filing History:

goldMedal1 out of 777 
 
Varian Associates, Inc.
 patents
silverMedal3 out of 834,411 
Other
 patents

Years Active: 1976-2022

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4 patents (USPTO):Explore Patents
1. 11331062 - Mobile x-ray imaging apparatus (2022-05-17),
2. 11191500 - Portable barium swallow test apparatus (2021-12-07),
3. 4037586 - Electroencephalograph display (1977-07-26),
4. 3955119 - Apparatus for predicting incipient failure of an X-ray generator tube (1976-05-04),
Profile summary based on public USPTO records.
Please report any incorrect information to [email protected]
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