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Kansas City, MO, United States of America

Ivan B Helmrich

Average Co-Inventor Count = 2.29

ph-index = 3

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 = 33

Ivan B HelmrichChristopher Jason Shields (2 patents)Ivan B HelmrichJason Blake Penrod (1 patent)Ivan B HelmrichCharles C Raney (1 patent)Ivan B HelmrichDouglas Lee Krivanek (1 patent)Ivan B HelmrichChristopher S Walker (1 patent)Ivan B HelmrichIvan B Helmrich (4 patents)Christopher Jason ShieldsChristopher Jason Shields (6 patents)Jason Blake PenrodJason Blake Penrod (10 patents)Charles C RaneyCharles C Raney (9 patents)Douglas Lee KrivanekDouglas Lee Krivanek (6 patents)Christopher S WalkerChristopher S Walker (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hallmark Cards, Inc. (2 from 233 patents)

2. Preco Industries, Inc. (2 from 25 patents)


4 patents:

1. 11499706 - Apparatus for producing light and sound

2. D782103 - Cover for an illumination device

3. 5901646 - Screen printing machine having three axes screen registration with

4. 5777878 - Screen printing press having longitudinal, lateral and angular screen

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as of
12/19/2025
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