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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Robert P. Engfer — 3 Patents

Micron: 2 patents #4,313 of 6,374Top 70%
Minnetonka, MN: #402 of 1,057 inventorsTop 40%
Minnesota: #19,251 of 52,454 inventorsTop 40%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Robert P. Engfer has been granted 3 US patents while listed as an inventor at Micron. The first was granted in 1998 and the most recent in October 2002. Robert P. Engfer ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Robert P. Engfer in Minnetonka, MN, US.

Patents per Year

Patents granted per year, 1998 to 2002Bar chart with a peak of 1 patents in 1998.peak 11998: 1 patents19982001: 1 patents20012002: 1 patents2002

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6463492 Technique to automatically notify an operating system level application of a system management event Robert R. Hoffman, Jr. 2002-10-08 $2,680,000
6321289 Apparatus for automatically notifying operating system level applications of the occurrence of system management events Robert R. Hoffman, Jr. 2001-11-20 $6,525,000
5749052 Cellular telephone management system Stephen E. Hidem, Joseph P. Tretter, III, John Schuholz, Charles H. Smoot, Hans Anderson 1998-05-05