Inventor · disambiguated record
Clifford C. Hach
Also filed as: BUCK MICHAEL D · HACH CLIFFORD C
13 granted patents·266 citations·filing 1974–1989
93Inventor score
Top patents by PatentIndex Score
13 records- 0189US4086062ADigital titration deviceHACH CHEMICAL CO·Filed 1977·Granted Apr 25, 1978·46 cites·6 claims
- 0280US4865992ASystem and method for quantitative analysis of a solutionHACH CO·Filed 1986·Granted Sep 12, 1989·55 cites·22 claims
- 0379US4053282AMethod and apparatus for sampling impure waterHACH CHEMICAL CO·Filed 1976·Granted Oct 11, 1977·29 cites·7 claims
- 0476US3953136AMethod and apparatus for automatically analyzing fluidsHACH CHEMICAL CO·Filed 1974·Granted Apr 27, 1976·26 cites·5 claims
- 0569US4878614AProgrammable fertilizer application systemHACH CO·Filed 1988·Granted Nov 7, 1989·31 cites·17 claims
- 0657US4993634AProgrammable chemical application systemHACH CO·Filed 1989·Granted Feb 19, 1991·23 cites·19 claims
- 0755US4025309ACarbon nitrogen test systemHACH CHEMICAL CO·Filed 1976·Granted May 24, 1977·13 cites·4 claims
- 0853US4288308AContinuous pH meterHACH CHEMICAL CO·Filed 1980·Granted Sep 8, 1981·14 cites·6 claims
- 0943US4645745ADigestion processHACH CO·Filed 1985·Granted Feb 24, 1987·9 cites·19 claims
- 1043US4197746ASlurry pipetHACH CHEMICAL·Filed 1978·Granted Apr 15, 1980·8 cites·2 claims
- 1135US4220921AConductivity probe for viscous liquidsHACH CHEMICAL·Filed 1979·Granted Sep 2, 1980·3 cites·2 claims
- 1234US4645746ADigestion processHACH CO·Filed 1986·Granted Feb 24, 1987·4 cites·18 claims
- 1332US4177148AMechanical strainerHACH CHEMICAL·Filed 1978·Granted Dec 4, 1979·5 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →