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

Robert J. Guerrini — 5 Patents

CACalgon: 3 patents #47 of 151Top 35%
CHChemtreat: 1 patents #40 of 81Top 50%
NCNalco Chemical: 1 patents #615 of 636Top 100%
Mechanicsville, VA: #59 of 248 inventorsTop 25%
Virginia: #6,255 of 34,511 inventorsTop 20%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Robert J. Guerrini has been granted 5 US patents while listed as an inventor at Calgon. The first was granted in 1993 and the most recent in February 2018. Robert J. Guerrini ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Robert J. Guerrini in Mechanicsville, VA, US.

Patents per Year

Patents granted per year, 1993 to 2018Bar chart with a peak of 1 patents in 1993.peak 11993: 1 patents19931995: 1 patents19952001: 1 patents20012003: 1 patents20032018: 1 patents2018

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
9890066 Composition and system for treating paint spray booth water 2018-02-13
6656377 Inorganic composition, process of preparation and method of use Denis E. Hassick, Michael P. Flaherty, Pamela J. Dotter 2003-12-02 $100,348,000
6306308 Inorganic composition, process of preparation and method of use Denis E. Hassick, Michael P. Flaherty, Pamela J. Dotter 2001-10-23
5382378 Composition useful for treating suspended solids and color bodies in water systems Paul Rey 1995-01-17 $78,856,000
5240509 Method for removing solids from systems containing water-based paints Paul Rey 1993-08-31 $28,538,000