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

Lance B. Crombie — 4 Patents

UNUnknown: 1 patents #29,356 of 83,584Top 40%
Webster, MN: #6 of 13 inventorsTop 50%
Minnesota: #16,016 of 52,454 inventorsTop 35%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Lance B. Crombie has been granted 4 US patents while listed as an inventor at Unknown. The first was granted in 1981 and the most recent in June 2005. Lance B. Crombie ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Lance B. Crombie in Webster, MN, US.

Patents per Year

Patents granted per year, 1981 to 2005Bar chart with a peak of 2 patents in 1981.peak 21981: 2 patents19812004: 1 patents20042005: 1 patents2005

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
6909021 Method of extracting lutein from green plant materials 2005-06-21
6737552 Method for extracting lutein from green plant materials 2004-05-18
4306023 Production of alcohol 1981-12-15
4286066 Continuous fermentation and distillation apparatus Robert S. Butler 1981-08-25