Growing community of inventors

Huntington Beach, CA, United States of America

Markus E Gropl

Average Co-Inventor Count = 3.97

ph-index = 8

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 = 182

Markus E GroplJoseph P Garavaglia (20 patents)Markus E GroplMark Marinovich (18 patents)Markus E GroplBrandon L Spoelstra (17 patents)Markus E GroplChris Lung (6 patents)Markus E GroplJoe Garavaglia (4 patents)Markus E GroplYen-Chao Chung (3 patents)Markus E GroplGlen Kanemoto (3 patents)Markus E GroplDave Puglisi (3 patents)Markus E GroplJoseph L Lutgen (1 patent)Markus E GroplMarkus E Gropl (24 patents)Joseph P GaravagliaJoseph P Garavaglia (29 patents)Mark MarinovichMark Marinovich (24 patents)Brandon L SpoelstraBrandon L Spoelstra (18 patents)Chris LungChris Lung (6 patents)Joe GaravagliaJoe Garavaglia (4 patents)Yen-Chao ChungYen-Chao Chung (10 patents)Glen KanemotoGlen Kanemoto (9 patents)Dave PuglisiDave Puglisi (3 patents)Joseph L LutgenJoseph L Lutgen (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Pacific Handy Cutter, Inc. (24 from 104 patents)


24 patents:

1. 12515359 - Safety cutter with blade change/storage mechanism

2. 11992964 - Safety cutter with blade change/storage mechanism

3. 11358292 - Ambidextrous utility knife

4. 10857685 - Safety cutter with blade change/storage mechanism

5. 10343294 - Ambidextrous utility knife

6. 10294011 - Pocket blade dispenser

7. 10093027 - Safety cutter

8. 10093026 - Safety cutter with blade depth selector/interlock mechanism

9. 9956695 - Spring back safety and film cutter

10. 9840013 - Safety cutter with blade change/storage mechanism

11. 9676106 - Safety cutter with guard-actuated blade deployment

12. 9676107 - Utility knife

13. D779301 - Safety cutter body

14. D769691 - Cutter

15. 9321578 - Pocket blade dispenser

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as of
1/12/2026
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