Inventor
Donald K. Landphair
Inventor
Bettendorf, IA, US
Overview
Patents· 35 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A01Cprimary
A01CPlanting42%
A01BSoil working in agriculture or forestry10%
Y10TTechnical subjects covered by former us classification9%
A01MCatching, trapping or scaring of animals6%
B05BSpraying apparatus6%
F16LPipes6%
Y02PClimate change mitigation technologies in the production or processing of goods6%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%
B22DCasting of metals1%
B60CVehicle tyres1%
PatentTitleYear
10,143,128Soil moisture-based planter downforce control20189,883,626'Controlling an agricultural vehicle based on sensed inputs'20189,801,332'System and method for consistent depth seeding to moisture'20179,744,817'Apparatus and method for automatic tire pressure adjustment'20179,675,004'Soil moisture-based planter downforce control'20179,043,949'System and method of calibrating the meter of a product distribution machine'20158,948,980'Seeding machine for planting multiple seed varieties'20158,863,676'Twin-row multiple variety planter and method of use'20148,695,396'Method of calibrating the meter of a product distribution apparatus and monitoring method'20148,577,561'Control system and method of operating a product distribution machine'20138,522,700'Air seeder with GPS based on/off control of individual row units'20138,504,310'Particulate flow sensing for an agricultural implement'20138,365,679'Seed spacing monitoring system for use in an agricultural seeder'2013RE043772'Seed tube for an agricultural seeding machine'20127,765,943'Dual function seed meter'20107,647,875'Seed hopper and routing structure for varying material delivery to row units'20107,472,660'Seed tube for an agricultural seeding machine'20097,418,908'Seed hopper and routing structure for varying material delivery to row units'20087,273,016'Variable speed drive for agricultural seeding machines'20077,213,525'Nozzle assembly for product-on-demand delivery system'20076,725,788'Pneumatic coupler for an agricultural seeding machine'20046,595,148'Individual seed hoppers forming banks of seed hoppers'20035,845,818'Removable meter cartridge for metering system'19985,484,025'Locking row marker hydraulic cylinders in retracted transport condition'19965,449,042'Rephasing controlling/controlled hydraulic cylinders in folding implement frame'19955,379,812'Closed granular chemical handling system'19955,224,527'Closed granular chemical handling system'19935,161,473'Seed distribution system and method for a seeding implement'19925,125,438'Closed granular chemical handling system'19925,060,701'Closed granular chemical handling system'19915,029,624'Closed granular chemical handling system'19914,721,167'Hitch flexing hinge'19884,690,260'Radial engagement drive coupler'19874,607,708'Foldable frame flexing hinge'19864,539,246'Socket casting with a cast-in ball and method of casting'1985Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1985–2018Patents assigned to DEERE & CO (34)· patent assignee history
1985–2018Based in Bettendorf, IA, US· patent location history
1992–1995Patents assigned to AMERICAN CYANAMID CO (3)· patent assignee history
2012–2015Patents assigned to LANDPHAIR DONALD K (8)· patent assignee history
2013–2015Patents assigned to LIU JAMES Z (4)· patent assignee history
2013–2014Patents assigned to GREEN LAWRENCE D (2)· patent assignee history
2017–2018Based in Moline, IL, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DEERE & CO | 34 | 1985–2018 |
| LANDPHAIR DONALD Kself | 8 | 2012–2015 |
| LIU JAMES Z | 4 | 2013–2015 |
| AMERICAN CYANAMID CO | 3 | 1992–1995 |
| GREEN LAWRENCE D | 2 | 2013–2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Bettendorf, IA, US | 31 | 1985–2018 |
| Moline, Illinois, US | 4 | 2017–2018 |