Inventor
Russell J. Keller
Inventor
Sunnyvale, CA, US
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A01Bprimary
A01BSoil working in agriculture or forestry18%
G05DSystems for controlling or regulating non-electric variables11%
A01GHorticulture8%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry8%
C01BNon-metallic elements8%
H05HPlasma technique8%
A01CPlanting5%
B64DEquipment for fitting in or to aircraft5%
C05CNitrogenous fertilisers5%
G01SRadio direction-finding5%
PatentTitleYear
9,573,855'In situ production of fertilizer'20179,137,951'In situ plant vigor machine'20158,951,481'In SITU production of fertilizer'20156,553,299'Methods and apparatus for precision agriculture operations utilizing real time kinematic global positioning system systems'20036,463,374'Form line following guidance system'20026,353,409'GPS guidance system for use with circular cultivated agricultural fields'20026,199,000'Methods and apparatus for precision agriculture operations utilizing real time kinematic global positioning system systems'20016,087,984'GPS guidance system for use with circular cultivated agricultural fields'20005,987,383'Form line following guidance system'19995,785,129'Row crop cultivator having a fixed depth of penetration'1998Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1998Based in Tintah, MN, US· patent location history
1999–2003Patents assigned to TRIMBLE NAVIGATION LTD (6)· patent assignee history
1999–2003Based in Sunnyvale, CA, US· patent location history
2015–2017Patents assigned to KELLER RUSSELL J (3)· patent assignee history
2015–2017Based in Wake, NC, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| TRIMBLE NAVIGATION LTD | 6 | 1999–2003 |
| KELLER RUSSELL Jself | 3 | 2015–2017 |
Locations
| Location | Patents | Span |
|---|---|---|
| Sunnyvale, California, US | 6 | 1999–2003 |
| Wake, NC, US | 3 | 2015–2017 |
| Tintah, Minnesota, US | 1 | 1998 |