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

Keith Lofstrom — 9 Patents

ICIcid: 3 patents #1 of 3Top 35%
Tektronix: 3 patents #378 of 1,698Top 25%
ICIcube: 1 patents #12 of 24Top 50%
Hillsboro, OR: #486 of 2,365 inventorsTop 25%
Oregon: #4,727 of 28,073 inventorsTop 20%
Overall (All Time): #535,341 of 4,157,543Top 15%
9 Patents All Time
Keith Lofstrom has been granted 9 US patents while listed as an inventor at Icid. The first was granted in 1993 and the most recent in March 2008. Keith Lofstrom ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list Keith Lofstrom in Hillsboro, OR, US.

Patents per Year

Patents granted per year, 1993 to 2008Bar chart with a peak of 4 patents in 1995.peak 41993: 1 patents19931994: 1 patents19941995: 4 patents19952000: 1 patents20002004: 1 patents20042008: 1 patents2008

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
RE40188 System and method for providing an integrated circuit with a unique identification 2008-03-25
6738788 Database system using a record key having some randomly positioned, non-deterministic bits Chi-Song Horng 2004-05-18
6161213 System for providing an integrated circuit with a unique identification 2000-12-12
5459466 Method and apparatus for converting a thermometer code to a gray code Daniel G. Knierim, Scott L. Williams 1995-10-17 $14,702,000
5428800 Input/output (I/O) bidirectional buffer for interfacing I/O ports of a field programmable interconnection device with array ports of a cross-point switch Wen-Jai Hsieh, Yih-Chyun Jenq, Chi-Song Horng 1995-06-27
5416484 Differential comparator and analog-to-digital converter comparator bank using the same 1995-05-16 $11,133,000
5402061 Temperature independent current source James W. H. Marsh 1995-03-28 $4,646,000
5282271 I/O buffering system to a programmable switching apparatus Wen-Jai Hsieh, Yih JENG, Chi-Song Horng 1994-01-25
5202593 Bi-directional bus repeater Thomas B. Huang, Yih-Chyun Jenq 1993-04-13