Inventor
Roger B. Whipple
Inventor
Waukegan, IL, US
Overview
Patents· 9 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F02Bprimary
F02BInternal-combustion piston engines26%
B63HMarine propulsion or steering22%
F02FCylinders, pistons or casings, for combustion engines13%
B22CFoundry moulding9%
F01NGas-flow silencers or exhaust apparatus for machines or engines in general9%
B22DCasting of metals4%
F16CShafts4%
Y02TClimate change mitigation technologies related to transportation4%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%
Y10TTechnical subjects covered by former us classification4%
PatentTitleYear
5,167,546'Automatic trim system'19925,161,372'Exhaust gas cooling valve'19924,940,435'Marine propulsion device'19904,925,411'Marine propulsion device tilt and trim mechanism'19904,863,290'Combined shift rod bushing and gear case seal for marine propulsion device'19894,786,263'Marine propulsion device power tilt and trim mechanism'19884,643,140'Two-cycle engine exhaust port'19874,632,169'Two cycle cylinder block foam pattern'19864,252,175'Cylinder block having a cast-in core unit and process for manufacturing same'1981Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1981–1992Patents assigned to OUTBOARD MARINE CORP (9)· patent assignee history
1981–1990Based in Waukegan, IL, US· patent location history
1989–1992Based in Grayslake, IL, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| OUTBOARD MARINE CORP | 9 | 1981–1992 |
Locations
| Location | Patents | Span |
|---|---|---|
| Waukegan, Illinois, US | 5 | 1981–1990 |
| Grayslake, Illinois, US | 4 | 1989–1992 |