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

Robert C. Eckert — 4 Patents

IPInternational Paper: 2 patents #244 of 935Top 30%
WNWeyerhaeuser Nr: 2 patents #184 of 578Top 35%
Kent, WA: #207 of 929 inventorsTop 25%
Washington: #23,275 of 76,902 inventorsTop 35%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Robert C. Eckert has been granted 4 US patents while listed as an inventor at International Paper. The first was granted in 1983 and the most recent in September 2010. Robert C. Eckert ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Robert C. Eckert in Kent, WA, US.

Patents per Year

Patents granted per year, 1983 to 2010Bar chart with a peak of 2 patents in 2010.peak 21983: 1 patents19831984: 1 patents19842010: 2 patents2010

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7794824 Carbon fibers from kraft softwood lignin Zia Abdullah 2010-09-14 $8,997,000
7678358 Carbon fibers from kraft softwood lignin Zia Abdullah 2010-03-16 $23,285,000
4427490 Delignification and bleaching process for lignocellulosic pulp with peroxide in the presence of metal additives 1984-01-24 $14,734,000
4372812 Chlorine free process for bleaching lignocellulosic pulp Richard B. Phillips, Arthur W. Kempf 1983-02-08 $14,000,000