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Doug Brownfield — 2 Patents

AMAmpacet: 2 patents #2 of 18Top 15%
Mason, OH: #523 of 1,011 inventorsTop 55%
Ohio: #30,551 of 73,341 inventorsTop 45%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Doug Brownfield has been granted 2 US patents while listed as an inventor at Ampacet. The first was granted in 2021 and the most recent in September 2025. Doug Brownfield ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Doug Brownfield in Mason, OH, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
12420535 Synthetic paper with improved tear properties and methods of manufacturing Mark Parsons, Danny Nevins 2025-09-23
11203188 Multilayered polymeric film Don Davis, Danny Nevins, Tom Mickey, Mark McManus, Linda Carroll 2021-12-21

Frequent Collaborators

Danny Nevins2 shared
Mark McManus1 shared
Tom Mickey1 shared
Don Davis1 shared
Mark Parsons1 shared
Linda Carroll1 shared

Nearby-Ranked Inventors

Leonard Mattheis2
Yiqi SHI2
Roberto DiCecco2
Haoneng Xu2
Emily Chew2
So Young Bae2
Julian Alexander Georgi2
Yoshihiro Asahara2
Assaf Ariel2