Growing community of inventors

Orange Park, FL, United States of America

Thomas R Karkkainen

Average Co-Inventor Count = 4.17

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 = 97

Thomas R KarkkainenAmitava Gupta (117 patents)Thomas R KarkkainenRonald J Clark (5 patents)Thomas R KarkkainenC Benjamin Wooley (3 patents)Thomas R KarkkainenSusan W Neadle (2 patents)Thomas R KarkkainenDawn D Wright (2 patents)Thomas R KarkkainenJames William Haywood (2 patents)Thomas R KarkkainenSheila B Hickson-Curran (2 patents)Thomas R KarkkainenShivkumar Mahadevan (1 patent)Thomas R KarkkainenHassan Chaouk (1 patent)Thomas R KarkkainenDerek Dean Nankivil (1 patent)Thomas R KarkkainenKurt John Moody (1 patent)Thomas R KarkkainenGregory A Tatarka (0 patent)Thomas R KarkkainenGeorge Zikos (0 patent)Thomas R KarkkainenArkady Selenow (0 patent)Thomas R KarkkainenJames W Haywood (0 patent)Thomas R KarkkainenThomas R Karkkainen (6 patents)Amitava GuptaAmitava Gupta (117 patents)Ronald J ClarkRonald J Clark (5 patents)C Benjamin WooleyC Benjamin Wooley (21 patents)Susan W NeadleSusan W Neadle (22 patents)Dawn D WrightDawn D Wright (18 patents)James William HaywoodJames William Haywood (15 patents)Sheila B Hickson-CurranSheila B Hickson-Curran (8 patents)Shivkumar MahadevanShivkumar Mahadevan (78 patents)Hassan ChaoukHassan Chaouk (24 patents)Derek Dean NankivilDerek Dean Nankivil (11 patents)Kurt John MoodyKurt John Moody (5 patents)Gregory A TatarkaGregory A Tatarka (0 patent)George ZikosGeorge Zikos (0 patent)Arkady SelenowArkady Selenow (0 patent)James W HaywoodJames W Haywood (0 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Johnson and Johnson Vision Care, Inc. (6 from 882 patents)


6 patents:

1. 12481173 - Multifocal contact lens displaying improved vision attributes

2. 11543683 - Multifocal contact lens displaying improved vision attributes

3. 9581835 - Patient interactive fit tool and methodology for contact lens fitting

4. 8992012 - Lens systems for presbyopia

5. 8393733 - Lenses for the correction of presbyopia and methods of designing the lenses

6. 7753521 - Lenses for the correction of presbyopia and methods of designing the lenses

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as of
12/6/2025
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