Inventor
David M. Stehouwer
Inventor
Cookeville, TN, US
Overview
Patents· 11 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B01Dprimary
B01DSeparation20%
F01MLubricating of machines or engines in general20%
F02DControlling combustion engines16%
F16NLubricating16%
F02MSupplying combustion engines in general with combustible mixtures or constituents thereof8%
C10LFuels not otherwise provided for4%
C10MLubricating compositions4%
C10NIndexing scheme associated with subclass c10m relating to lubricating compositions4%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%
Y10TTechnical subjects covered by former us classification4%
PatentTitleYear
7,913,858'Acid-neutralizing filter media'20117,250,126'Acid-neutralizing filter media'20076,860,241'Fuel filter including slow release additive'20056,319,402'Extended life dual full-flow and bypass filter'20016,273,031'Clean lubricant circulation system'20016,238,554'Fuel filter including slow release additive'20016,082,322'Electronically controlled continuous lubricating oil replacement system'20005,970,942'Electronically controlled continuous lubricating oil replacement system'19995,881,688'Electronically controlled continuous lubricating oil replacement system'19995,749,339'Electronically controlled continuous lubricating oil replacement system'19983,996,144'Rust inhibitors and lubricant compositions containing same'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976Patents assigned to TEXACO INC (1)· patent assignee history
1976Based in Fishkill, NY, US· patent location history
1998–2000Patents assigned to CUMMINS ENGINE CO INC (4)· patent assignee history
1998–2001Based in Cookeville, TN, US· patent location history
2001–2011Patents assigned to FLEETGUARD INC (4)· patent assignee history
2001Patents assigned to NELSON IND INC (2)· patent assignee history
2005Patents assigned to DOBER CHEMICAL CORP (1)· patent assignee history
2005–2011Based in Columbus, IN, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CUMMINS ENGINE CO INC | 4 | 1998–2000 |
| FLEETGUARD INC | 4 | 2001–2011 |
| NELSON IND INC | 2 | 2001 |
| DOBER CHEMICAL CORP | 1 | 2005 |
| TEXACO INC | 1 | 1976 |
Locations
| Location | Patents | Span |
|---|---|---|
| Cookeville, TN, US | 7 | 1998–2001 |
| Columbus, IN, US | 3 | 2005–2011 |
| Fishkill, New York, US | 1 | 1976 |