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

John Christopher Ripstra — 6 Patents

IBM: 6 patents #16,491 of 70,183Top 25%
Rochester, MN: #842 of 3,042 inventorsTop 30%
Minnesota: #11,902 of 52,454 inventorsTop 25%
Overall (All Time): #779,687 of 4,157,543Top 20%
6 Patents All Time
John Christopher Ripstra has been granted 6 US patents while listed as an inventor at IBM. The first was granted in 1998 and the most recent in August 2004. John Christopher Ripstra ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list John Christopher Ripstra in Rochester, MN, US.

Patents per Year

Patents granted per year, 1998 to 2004Bar chart with a peak of 2 patents in 2000.peak 21998: 1 patents19982000: 2 patents20002001: 2 patents20012004: 1 patents2004

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6785693 Management of multiple links to a file in a file system Dennis Steven DeLorme, Alan Leon Levering, Jeffrey J. Parker 2004-08-31 $4,873,000
6308245 Adaptive, time-based synchronization mechanism for an integrated posix file system David L. Johnson, Michael L. Nordstrom 2001-10-23 $31,841,000
6205471 Object oriented mail server framework mechanism Frank William Gilchrist, Eric Nels Herness, Eric H. Jenney, George J. Romano 2001-03-20 $35,881,000
6105056 Object oriented mail server framework mechanism Frank William Gilchrist, Eric Nels Herness, Eric H. Jenney, George J. Romano 2000-08-15 $26,064,000
6081832 Object oriented mail server framework mechanism Frank William Gilchrist, Eric Nels Herness, Eric H. Jenney, George J. Romano 2000-06-27 $38,700,000
5768505 Object oriented mail server framework mechanism Frank William Gilchrist, Eric Nels Herness, Eric H. Jenney, George J. Romano 1998-06-16 $7,430,000