Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
CF

Castor Fu — 4 Patents

DIDigeo: 3 patents #24 of 76Top 35%
AEArris Enterprises: 1 patents #772 of 1,262Top 65%
Menlo Park, CA: #1,553 of 3,774 inventorsTop 45%
California: #126,026 of 386,348 inventorsTop 35%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Castor Fu has been granted 4 US patents while listed as an inventor at Digeo. The first was granted in 2002 and the most recent in April 2014. Castor Fu ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Castor Fu in Menlo Park, CA, US.

Patents per Year

Patents granted per year, 2002 to 2014Bar chart with a peak of 1 patents in 2002.peak 12002: 1 patents20022003: 1 patents20032006: 1 patents20062014: 1 patents2014

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
8701140 Methods and apparatus for broadcasting data Tsutomu Shimomura, Steve Waltman, Mark Peting, Dag H. Johansen, Geoff Mulligan 2014-04-15 $26,272,000
7155734 Methods of operating a data broadcast service Tsutomu Shimomura, Steve Waltman, Mark Peting, Dag H. Johansen, Geoff Mulligan 2006-12-26
6526580 Broadband data broadcasting service Tsutomu Shimomura, Steve Waltman, Mark Peting, Dag H. Johansen, Geoff Mulligan 2003-02-25
6473858 Method and apparatus for broadcasting data with access control Tsutomu Shimomura, Steve Waltman, Mark Peting, Dag H. Johansen, Geoff Mulligan 2002-10-29