Inventor · disambiguated record
Robert D. Hansen
Also filed as: HANSEN JR ROBERT D · HANSEN ROBERT D
22 granted patents·369 citations·filing 1972–2012
96Inventor score
Top patents by PatentIndex Score
22 records- 0187US4684459ACollector compositions for the froth flotation of mineral valuesDOW CHEMICAL CO·Filed 1986·Granted Aug 4, 1987·48 cites·23 claims
- 0287US4582596AFrothers demonstrating enhanced recovery of coarse particles in froth floatationDOW CHEMICAL CO·Filed 1984·Granted Apr 15, 1986·44 cites·15 claims
- 0385US4797202AFroth flotation methodDOW CHEMICAL CO·Filed 1987·Granted Jan 10, 1989·45 cites·12 claims
- 0480US5057209ADepression of the flotation of silica or siliceous gangue in mineral flotationDOW CHEMICAL CO·Filed 1990·Granted Oct 15, 1991·44 cites·21 claims
- 0580US4474619AConditioner for flotation of coalDOW CHEMICAL CO·Filed 1981·Granted Oct 2, 1984·32 cites·17 claims
- 0676US4822483ACollector compositions for the froth flotation of mineral valuesDOW CHEMICAL CO·Filed 1987·Granted Apr 18, 1989·30 cites·25 claims
- 0774US4061833ALatex coatings for electrographic sheetsDOW CHEMICAL CO·Filed 1976·Granted Dec 6, 1977·17 cites·6 claims
- 0871US4808301AFlotation depressantsDOW CHEMICAL CO·Filed 1987·Granted Feb 28, 1989·25 cites·12 claims
- 0961US4213831AAluminum container for processing vinylbenzyl chloridesDOW CHEMICAL CO·Filed 1972·Granted Jul 22, 1980·5 cites·4 claims
- 1058US4761223AFrothers demonstrating enhanced recovery of fine particles of coal in froth flotationDOW CHEMICAL CO·Filed 1984·Granted Aug 2, 1988·14 cites·1 claims
- 1146US4676890ACollector compositions for the froth flotation of mineral valuesDOW CHEMICAL CO·Filed 1986·Granted Jun 30, 1987·9 cites·23 claims
- 1245US4702822ANovel collector composition for froth flotationDOW CHEMICAL CO·Filed 1986·Granted Oct 27, 1987·8 cites·32 claims
- 1344US4735711ANovel collectors for the selective froth flotation of mineral sulfidesDOW CHEMICAL CO·Filed 1986·Granted Apr 5, 1988·9 cites·11 claims
- 1442USD684412SMedia unitHANSEN JR ROBERT D·Filed 2012·Granted Jun 18, 2013·3 cites·1 claims
- 1542USD682584SMedia unitHANSEN JR ROBERT D·Filed 2012·Granted May 21, 2013·3 cites·1 claims
- 1642US4770767AMethod for the froth flotation of coalDOW CHEMICAL CO·Filed 1987·Granted Sep 13, 1988·7 cites·14 claims
- 1741US4789392AFroth flotation methodDOW CHEMICAL CO·Filed 1987·Granted Dec 6, 1988·7 cites·13 claims
- 1838USD670511SMedia unitHANSEN JR ROBERT D·Filed 2012·Granted Nov 13, 2012·2 cites·1 claims
- 1937US4830740APyrite depressants useful in the separation of pyrite from coalDOW CHEMICAL CO·Filed 1988·Granted May 16, 1989·5 cites·17 claims
- 2037US4826588APyrite depressants useful in the separation of pyrite from coalDOW CHEMICAL CO·Filed 1988·Granted May 2, 1989·5 cites·15 claims
- 2137US4820406AMethod for the froth flotation of coalDOW CHEMICAL CO·Filed 1987·Granted Apr 11, 1989·5 cites·14 claims
- 2231US4732668ANovel collectors for the selective froth flotation of mineral sulfidesDOW CHEMICAL CO·Filed 1986·Granted Mar 22, 1988·2 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →