DC

Douglas D. Clarkson

HC Harley-Davidson Motor Company: 7 patents #39 of 535Top 8%
WC W.R. Grace & Co.-Conn.: 3 patents #242 of 1,045Top 25%
📍 Painted Cave, CA: #2 of 6 inventorsTop 35%
🗺 California: #35,036 of 386,348 inventorsTop 10%
Overall (All Time): #266,482 of 4,157,543Top 7%
17
Patents All Time

Issued Patents All Time

Showing 1–17 of 17 patents

Patent #TitleCo-InventorsDate
D1093245 Motorcycle handlebar 2025-09-16
D1093246 Motorcycle handlebar 2025-09-16
D1093247 Motorcycle handlebar 2025-09-16
D664074 Pair of motorcycle saddlebag extensions 2012-07-24
7997602 Rack-mounted storage case for a motorcycle Adam Hing Ping Chan, Brian Weber, Chad M. Buchanan 2011-08-16
7849948 Debris deflector Jason J. Zuleger 2010-12-14
7832751 Rear fender assembly Mark T. Fischer, John S. Cullen, Ronald Hurth, Santiago Zumaya Mendoza, Jason A. Franklin +2 more 2010-11-16
7681950 Flip-up seat with rear seat storage Francis James Giunta, John Zapushek, Thomas Mandery, Brendon Smith, David Rank 2010-03-23
D576088 Riser and clamp Steven E. Wind, James A. Wollmer, John E. Stelling 2008-09-02
D571276 Oil tank for a motorcycle Francis James Giunta, Jesse Dees, Jeremy Michael Lenzendorf, Ronald Hurth 2008-06-17
D570746 Primary cover for a motorcycle Michael T. Arndt, Sean A. Rusch 2008-06-10
6122991 Handlebar assembly for vehicles and method for making the same 2000-09-26
D425463 Handlebar with offset 2000-05-23
D415084 Handlebar assembly 1999-10-12
5023267 Microbiological control agent Richard P. Clifford, Alan Marshall 1991-06-11
4863616 Microbiological control process Richard P. Clifford, Alan Marshall 1989-09-05
4853411 Biocide Richard P. Clifford 1989-08-01