Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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John T. Gianfagna — 4 Patents

3M: 3 patents #4,239 of 11,543Top 40%
IMImation: 1 patents #303 of 622Top 50%
Minneapolis, MN: #1,608 of 6,114 inventorsTop 30%
Minnesota: #16,016 of 52,454 inventorsTop 35%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
John T. Gianfagna has been granted 4 US patents while listed as an inventor at 3M. The first was granted in 1994 and the most recent in July 1999. John T. Gianfagna ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list John T. Gianfagna in Minneapolis, MN, US.

Patents per Year

Patents granted per year, 1994 to 1999Bar chart with a peak of 1 patents in 1994.peak 11994: 1 patents19941995: 1 patents19951996: 1 patents19961999: 1 patents1999

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
D412326 Data storage tape cartridge Leslie M. Collins, Randolph L. Carlson, Gregory H. Johnson, Steven R. Seeman 1999-07-27
D366059 Tape cartridge James J. Evanoff, Sten R. Gerfast, Leroy A. Kuta, Robert W. Tapani 1996-01-09
D363066 Tape cartridge Robert W. Tapani 1995-10-10
5370332 Videocassette flange with time available gauge Dewain R. Goff, Kim R. Olson 1994-12-06 $6,764,000

Frequent Collaborators

Robert W. Tapani2 shared
Kim R. Olson1 shared
Randolph L. Carlson1 shared
Sten R. Gerfast1 shared
Dewain R. Goff1 shared
Steven R. Seeman1 shared

Nearby-Ranked Inventors

Jagadeesh Kandasamy4
Ross CABOT4
George Ueda4
Franz A. Gruswitz4
Tommy Glimberg4
Vinayakaraddy Gulabal4
Sandra Bittorf4
Aviel FOGEL4
Eric Matthew Walton4