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William L. Stuth — 6 Patents

UNUnknown: 1 patents #29,356 of 83,584Top 40%
Maple Valley, WA: #53 of 309 inventorsTop 20%
Washington: #16,995 of 76,902 inventorsTop 25%
Overall (All Time): #779,687 of 4,157,543Top 20%
6 Patents All Time
William L. Stuth has been granted 6 US patents while listed as an inventor at Unknown. The first was granted in 1991 and the most recent in August 2007. William L. Stuth ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list William L. Stuth in Maple Valley, WA, US.

Patents per Year

Patents granted per year, 1991 to 2007Bar chart with a peak of 2 patents in 1993.peak 21991: 1 patents19911993: 2 patents19931997: 2 patents19972007: 1 patents2007

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
7252766 Wastewater treatment system and method Matthew Lee 2007-08-07
5690824 Septic system screened pump vault — 1997-11-25
5609754 Secondary sewage treatment system — 1997-03-11
5202027 Secondary sewage treatment system — 1993-04-13
5200081 Secondary sewage treatment system — 1993-04-06
5030353 Secondary sewage treatment system — 1991-07-09

Frequent Collaborators

Matthew Lee1 shared

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Carole Chapelat6
Mina Sedaghat6
Martinus Johannes Donatus Brakkee6