Growing community of inventors

Shafer, MN, United States of America

Michael Frederick Stephan

Average Co-Inventor Count = 1.16

ph-index = 5

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 = 61

Michael Frederick StephanDavid B Heisner (2 patents)Michael Frederick StephanMark O Borger (2 patents)Michael Frederick StephanMargaret Reeber (2 patents)Michael Frederick StephanWayne Perring (2 patents)Michael Frederick StephanJacob E Lewis (1 patent)Michael Frederick StephanMichael Frederick Stephan (12 patents)David B HeisnerDavid B Heisner (44 patents)Mark O BorgerMark O Borger (8 patents)Margaret ReeberMargaret Reeber (4 patents)Wayne PerringWayne Perring (3 patents)Jacob E LewisJacob E Lewis (1 patent)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Other (8 from 832,961 patents)

2. Abbott Laboratories Corporation (2 from 4,179 patents)

3. Stephan, Michael Frederick (0 patent)


12 patents:

1. 12180674 - Land plane attachment with mechanical ripper

2. 12152357 - Flexible snowplow cutting edge

3. 11472331 - Laser light safety guide

4. 11131075 - Universal skid-steer and 3-point hitch adapter

5. 10889949 - Flexible snowplow cutting edge

6. 10865533 - Flexible snowplow cutting edge

7. 8870017 - Bottle for flowable product

8. 8776406 - Reversible wing plow and method of rotation

9. D696949 - Bottle

10. 7941947 - Snow pusher

11. 7788829 - Snow pusher

12. 7654016 - Snow pusher

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as of
1/13/2026
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