Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Michael E. Grasis — 3 Patents

COCorning Oca: 2 patents #2 of 6Top 35%
East Brookfield, MA: #2 of 10 inventorsTop 20%
Massachusetts: #33,867 of 88,656 inventorsTop 40%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Michael E. Grasis has been granted 3 US patents while listed as an inventor at Corning Oca. The first was granted in 1999 and the most recent in March 2001. Michael E. Grasis ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Michael E. Grasis in East Brookfield, MA, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6198857 Add/drop optical multiplexing device Michael A. Scobey, Derek E. Spock, Robert W. Lafreniere 2001-03-06 $64,281,000
6167171 Cascading optical multiplexing device Michael A. Scobey, Derek E. Spock 2000-12-26
5859717 Multiplexing device with precision optical block Michael A. Scobey, Derek E. Spock, Robert W. Lafreniere 1999-01-12 $30,391,000