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Willfried Schramm — 4 Patents

BIBio-Quant: 2 patents #1 of 5Top 20%
SSSaliva Diagnostic Systems: 1 patents #2 of 4Top 50%
University of Michigan: 1 patents #1,906 of 4,352Top 45%
Ann Arbor, MI: #1,956 of 6,071 inventorsTop 35%
Michigan: #22,248 of 86,293 inventorsTop 30%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Willfried Schramm has been granted 4 US patents while listed as an inventor at Bio-Quant. The first was granted in 1989 and the most recent in August 1999. Willfried Schramm ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Willfried Schramm in Ann Arbor, MI, US.

Patents per Year

Patents granted per year, 1989 to 1999Bar chart with a peak of 1 patents in 1989.peak 11989: 1 patents19891990: 1 patents19901994: 1 patents19941999: 1 patents1999

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5935864 Method and kit for collecting samples of liquid specimens for analytical testing Anthony Burgess-Cassler, Charles Haisley 1999-08-10
5281539 Immunoassay device for continuous monitoring — 1994-01-25
4925629 Diagnostic device — 1990-05-15
4817632 Oral fluid collection article — 1989-04-04

Frequent Collaborators

Anthony Burgess-Cassler1 shared
Charles Haisley1 shared

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