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USPTO Patent Rankings Data through Sept 30, 2025
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Grant M. Martens — 5 Patents in 2021

ACAcushnet: 5 patents #9 of 90Top 10%
San Diego, CA: #314 of 4,495 inventorsTop 7%
California: #3,968 of 66,859 inventorsTop 6%
Overall (2021): #33,130 of 548,734Top 7%
5 Patents 2021

Issued Patents 2021

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
11202946 Golf club having a damping element for ball speed control Charles E. Golden, Marni D. Ines, Christopher Savage, Gentry Ferguson, John Morin +4 more 2021-12-21
11186016 Golf club head having multi-material face and method of manufacture Uday V. Deshmukh 2021-11-30
11077340 Golf club having a low modulus crown Uday V. Deshmukh, Nick Frame, Richard L. Cleghorn, Takeshi Casey Funaki, Doug M. Takehara 2021-08-03
10940371 Multi-material golf club head Stephen S. Murphy, Richard Sanchez, Stephanie Luttrell, Christopher D. Harvell, Darryl C. Galvan +2 more 2021-03-09
10881924 Weighted iron set Jason A. Mata, Marni D. Ines, Jonathan Hebreo, Joshua G. Breier, Michael E. Franz +1 more 2021-01-05