Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Joyce Prindle — 5 Patents

CICh20 Incorporated: 3 patents #1 of 8Top 15%
CICh.Sub.2 O Incorporated: 2 patents #2 of 3Top 70%
Olympia, WA: #77 of 379 inventorsTop 25%
Washington: #19,692 of 76,902 inventorsTop 30%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Joyce Prindle has been granted 5 US patents while listed as an inventor at Ch20 Incorporated. The first was granted in 1994 and the most recent in February 2002. Joyce Prindle ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Joyce Prindle in Olympia, WA, US.

Patents per Year

Patents granted per year, 1994 to 2002Bar chart with a peak of 2 patents in 1999.peak 21994: 1 patents19941995: 1 patents19951999: 2 patents19992002: 1 patents2002

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
6350410 Method and composition for inhibiting biological fouling in an irrigation system Carl E. Iverson 2002-02-26
5930950 Method of inhibiting the formation of crystalline mineral deposits in soil Thomas Iverson, Jr. 1999-08-03
5863584 Method for treating produce and process water Iverson Thomas, Jr., Robert E. Keith 1999-01-26
5422348 Method for inhibiting the formation of crystalline mineral deposits on plants Thomas Iverson, Jr. 1995-06-06
5369099 Method and composition for inhibiting the formation of hardwater deposits on fruit Thomas Iverson, Jr. 1994-11-29