Inventor
Heinz Dreyer
Inventor
Hasbergen, DE
Overview
Patents· 22 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A01Cprimary
A01CPlanting48%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests15%
A01BSoil working in agriculture or forestry13%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry8%
Y02ATechnologies for adaptation to climate change5%
C04BLime, magnesia3%
C07CAcyclic or carbocyclic compounds3%
C10GCracking hydrocarbon oils3%
E01CConstruction of, or surfaces for, roads, sports grounds, or the like3%
Y02PClimate change mitigation technologies in the production or processing of goods3%
PatentTitleYear
5,736,076'Graphite moldings'19984,916,103'Preparation of a catalytically active composition for the gas phase oxidation of propylene to acrolein and acrylic acid'19904,786,402'Preparation of medicinal white oils and medicinal paraffins'19884,726,304'Seed drill'19884,694,759'Seed drill'19874,580,507'Drill for applying seed and fertilizer'19864,580,508'Seed drill'19864,480,948'Machine for applying pellets and powder'19844,422,392'Seed drill with disk-type furrow openers'19834,407,207'Drill having disk furrow openers'19834,366,760'Seed drill'19834,351,481'Centrifugal spreader, especially for granulated fertilizers'19824,275,670'Seed drill mounting arrangement'19814,263,858'Seed and fertilizer drill drive'19814,234,129'Mounting device for agricultural spreading machines'19804,208,974'Seed drill having parallel guide means for the movable shank'19804,202,474'Machine for spreading fertilizer and seed'19804,175,705'Machine for the spreading of material in granular and powder form'19794,142,685'Machine for the pneumatic spreading of granular material'19794,058,180'Attaching device for mounting of a broadcast fertilizer spreader on a tractor'19774,037,545'Machine for distributing material'19774,020,991'Machine for the pneumatic spreading of granular material'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1988Patents assigned to AMAZONEN WERKE DREYER H (19)· patent assignee history
1977–1988Based in Hasbergen, DE· patent location history
1977Based in Gaste, DE· patent location history
1988–1998Patents assigned to BASF AG (3)· patent assignee history
1988–1998Based in Ludwigshafen, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| AMAZONEN WERKE DREYER H | 19 | 1977–1988 |
| BASF AG | 3 | 1988–1998 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hasbergen, DE | 18 | 1977–1988 |
| Ludwigshafen, DE | 3 | 1988–1998 |
| Gaste, DE | 1 | 1977 |