Growing community of inventors

Lake Geneva, WI, United States of America

Duke Larsen

Average Co-Inventor Count = 2.08

ph-index = 7

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 = 798

Duke LarsenRudolph William Krolopp (2 patents)Duke LarsenStephen H Gorski (2 patents)Duke LarsenRobert W Dunst (2 patents)Duke LarsenThomas A Freeburg (1 patent)Duke LarsenJames Edward McCambridge (1 patent)Duke LarsenMichael K Eddinger (1 patent)Duke LarsenJason M Long (1 patent)Duke LarsenNicolo Altamore (1 patent)Duke LarsenDonald C McKinnon (1 patent)Duke LarsenTimothy G Ehr (1 patent)Duke LarsenMichael E Hansen (1 patent)Duke LarsenRichard K Vitek (1 patent)Duke LarsenThomas F Gauthier (1 patent)Duke LarsenSteven C Cozzolino (1 patent)Duke LarsenRudolph W Kroplopp (1 patent)Duke LarsenBrian P Walsh (1 patent)Duke LarsenThomas C Driscoll (1 patent)Duke LarsenDuke Larsen (11 patents)Rudolph William KroloppRudolph William Krolopp (10 patents)Stephen H GorskiStephen H Gorski (4 patents)Robert W DunstRobert W Dunst (2 patents)Thomas A FreeburgThomas A Freeburg (57 patents)James Edward McCambridgeJames Edward McCambridge (56 patents)Michael K EddingerMichael K Eddinger (24 patents)Jason M LongJason M Long (23 patents)Nicolo AltamoreNicolo Altamore (14 patents)Donald C McKinnonDonald C McKinnon (12 patents)Timothy G EhrTimothy G Ehr (6 patents)Michael E HansenMichael E Hansen (5 patents)Richard K VitekRichard K Vitek (4 patents)Thomas F GauthierThomas F Gauthier (2 patents)Steven C CozzolinoSteven C Cozzolino (2 patents)Rudolph W KroploppRudolph W Kroplopp (1 patent)Brian P WalshBrian P Walsh (1 patent)Thomas C DriscollThomas C Driscoll (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Wahl Clipper Corporation (4 from 321 patents)

2. Motorola Corporation (3 from 20,290 patents)

3. Fotodyne Incorporated (2 from 11 patents)

4. Cummins-allison Corporation (1 from 376 patents)

5. Finelite Inc. (1 from 36 patents)


11 patents:

1. D458710 - Trimmer

2. D436692 - Contour clipper

3. D435936 - Clipper lid

4. D369984 - Apparatus for discriminating and counting documents

5. D348523 - Electronic imager for biological samples

6. D346662 - Combined stacked temperature regulator, power supply and gel dryer for

7. D336545 - Facial hair trimmer

8. D331710 - Engine timing light

9. D306583 - Radio transceiver housing or similar article

10. D301883 - Cradle for a telephone handset or similar article

11. D297736 - Housing for a portable handset telephone or similar article

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as of
12/18/2025
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