Inventor · disambiguated record
Heinz Dreyer
Also filed as: DREYER HEINZ
22 granted patents·677 citations·filing 1975–1995
96Inventor score
Top patents by PatentIndex Score
22 records- 0196US4208974ASeed drill having parallel guide means for the movable shankAMAZONEN WERKE DREYER H·Filed 1977·Granted Jun 24, 1980·89 cites·15 claims
- 0293US4275670ASeed drill mounting arrangementAMAZONEN WERKE DREYER H·Filed 1979·Granted Jun 30, 1981·69 cites·15 claims
- 0387US4580507ADrill for applying seed and fertilizerAMAZONEN WERKE DREYER H·Filed 1983·Granted Apr 8, 1986·83 cites·12 claims
- 0484US4726304ASeed drillAMAZONEN WERKE DREYER H·Filed 1985·Granted Feb 23, 1988·82 cites·12 claims
- 0584US4407207ADrill having disk furrow openersAMAZONEN WERKE DREYER H·Filed 1982·Granted Oct 4, 1983·60 cites·6 claims
- 0681US4916103APreparation of a catalytically active composition for the gas phase oxidation of propylene to acrolein and acrylic acidBASF AG·Filed 1988·Granted Apr 10, 1990·38 cites·1 claims
- 0775US4422392ASeed drill with disk-type furrow openersAMAZONEN WERKE DREYER H·Filed 1982·Granted Dec 27, 1983·42 cites·7 claims
- 0874US4786402APreparation of medicinal white oils and medicinal paraffinsBASF AG·Filed 1987·Granted Nov 22, 1988·30 cites·10 claims
- 0967US4366760ASeed drillAMAZONEN WERKE DREYER H·Filed 1980·Granted Jan 4, 1983·28 cites·3 claims
- 1067US4263858ASeed and fertilizer drill driveAMAZONEN WERKE DREYER H·Filed 1979·Granted Apr 28, 1981·19 cites·13 claims
- 1165US4351481ACentrifugal spreader, especially for granulated fertilizersAMAZONEN WERKE DREYER H·Filed 1979·Granted Sep 28, 1982·18 cites·20 claims
- 1265US4020991AMachine for the pneumatic spreading of granular materialAMAZONEN WERKE DREYER H·Filed 1976·Granted May 3, 1977·18 cites·23 claims
- 1357US4694759ASeed drillAMAZONEN WERKE DREYER H·Filed 1985·Granted Sep 22, 1987·27 cites·17 claims
- 1450US4480948AMachine for applying pellets and powderAMAZONEN WERKE DREYER H·Filed 1982·Granted Nov 6, 1984·13 cites·6 claims
- 1550US4142685AMachine for the pneumatic spreading of granular materialAMAZONEN WERKE DREYER H·Filed 1977·Granted Mar 6, 1979·15 cites·12 claims
- 1646US5736076AGraphite moldingsBASF AG·Filed 1995·Granted Apr 7, 1998·11 cites·6 claims
- 1744US4175705AMachine for the spreading of material in granular and powder formAMAZONEN WERKE DREYER H·Filed 1977·Granted Nov 27, 1979·8 cites·13 claims
- 1841US4234129AMounting device for agricultural spreading machinesAMAZONEN WERKE DREYER H·Filed 1977·Granted Nov 18, 1980·7 cites·15 claims
- 1940US4202474AMachine for spreading fertilizer and seedAMAZONEN WERKE DREYER H·Filed 1976·Granted May 13, 1980·7 cites·10 claims
- 2038US4058180AAttaching device for mounting of a broadcast fertilizer spreader on a tractorAMAZONEN WERKE DREYER H·Filed 1976·Granted Nov 15, 1977·6 cites·10 claims
- 2134US4037545AMachine for distributing materialAMAZONEN WERKE DREYER H·Filed 1975·Granted Jul 26, 1977·4 cites·6 claims
- 2233US4580508ASeed drillAMAZONEN WERKE DREYER H·Filed 1985·Granted Apr 8, 1986·3 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →