Growing community of inventors

Sherwood, OR, United States of America

William Johnston

Average Co-Inventor Count = 1.57

ph-index = 9

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 = 371

William JohnstonJason Clark (5 patents)William JohnstonEric Petterson (5 patents)William JohnstonEric David Marvin (5 patents)William JohnstonLewis A Danielson (3 patents)William JohnstonFrederick Karl (3 patents)William JohnstonGlenn A Klecker (2 patents)William JohnstonFred Karl (2 patents)William JohnstonChristopher John Murray (1 patent)William JohnstonDaniel Lee Hughes (1 patent)William JohnstonDrew Essig (1 patent)William JohnstonJeffrey James Smith (1 patent)William JohnstonPradeep Ramasubramanian (1 patent)William JohnstonWilliam Johnston (23 patents)Jason ClarkJason Clark (6 patents)Eric PettersonEric Petterson (6 patents)Eric David MarvinEric David Marvin (5 patents)Lewis A DanielsonLewis A Danielson (23 patents)Frederick KarlFrederick Karl (16 patents)Glenn A KleckerGlenn A Klecker (45 patents)Fred KarlFred Karl (3 patents)Christopher John MurrayChristopher John Murray (17 patents)Daniel Lee HughesDaniel Lee Hughes (14 patents)Drew EssigDrew Essig (12 patents)Jeffrey James SmithJeffrey James Smith (6 patents)Pradeep RamasubramanianPradeep Ramasubramanian (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Crimson Trace Corporation (23 from 105 patents)


23 patents:

1. 12038255 - Alignment ring for scope

2. 11703305 - Alignment ring for scope

3. 11391543 - Alignment ring for scope

4. D956166 - Laser device

5. D943046 - Grip

6. D905193 - Scope

7. 10859345 - Alignment ring for scope

8. D895760 - Sight

9. D894988 - Scope

10. D895052 - Sight

11. D884112 - Scope

12. D861117 - Laser device

13. D831779 - Laser device

14. D825707 - Laser device

15. D812182 - Laser device

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idiyas.com
as of
1/14/2026
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