Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Companies › Chemfil
CH

Chemfil — 8 Patents

Rank (All Time): #69,285 of 105,732Top 70%
7 inventors
8 Patents All Time

Patents per Year

Patents granted per year, 1982 to 1993Bar chart with a peak of 2 patents in 1988.peak 21982: 1 patents19821987: 1 patents19871988: 2 patents19881989: 1 patents19891990: 1 patents19901993: 2 patents1993

Top Inventors at Chemfil All Time

Showing 1–7 of 7 inventors

RankNamePatents
1 Harry R. Charles 7
2 Donald L. Miles 4
2 Thomas W. Cape 4
#4 Edmund L. Tisko 1
#4 Cathy D. Stewart 1
#4 Dean L. Miles 1
#4 William B. Brown 1

Most Valuable Patents

PatentEst. ValueYear
Method for removing and recovering paint overspray in a water wash spray booth$37M1993
Phosphate coating composition and method of applying a zinc-nickel-manganese phosphate coating$19M1993
Magnesium sulfate and complex silicate mineral paint denaturant$15M1987
Phosphate coating composition and method of applying a zinc-nickel phosphate coating$11M1988
Process and composition for sealing a conversion coated surface with a solution containing vanadium$6M1989

All 100 most valuable US patents →

Related Companies

Rem Chemicals8
Les Fils D'Auguste Maillefer Societe Anonyme A Ballaigues8
Peak Systems8
Franklin Sports Industries8
Coppus Engineering8
Telecredit8
Carlisle Tire And Rubber Company8
Real8
Mixalloy Limited8