Inventor
John D. Crabtree
Inventor
Akron, OH, US
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F16Lprimary
F16LPipes17%
H04LTransmission of digital information, e.g. telegraphic communication17%
D21HPulp compositions8%
F16JPistons8%
G05BControl or regulating systems in general8%
H05BElectric heating8%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications8%
Y04SSystems integrating technologies related to power network operation, communication or information technologies for improving the electrical power generation, transmission, distribution, management or usage, i.e. smart grids8%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%
Y10TTechnical subjects covered by former us classification8%
PatentTitleYear
8,339,804'Programmable routing module'20127,800,919'Programmable routing module'20107,172,369'Methods for aligning pipes and connecting the lined pipe with adjacent or lateral pipes'20077,037,043'Methods for lining pipes and connecting the lined pipe with adjacent or lateral pipes'20066,154,683'Low voltage industrial control system providing intrinsically safe operation'20004,529,653'Flexible, asbestos-free gasket material'19854,300,075'AC Regulator system for quartz iodine lamps'1981Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1981Patents assigned to NUARC CO (1)· patent assignee history
1981Based in Cuyahoga Falls, OH, US· patent location history
1985Based in Burnley, GB· patent location history
2000–2012Based in Akron, OH, US· patent location history
2006Patents assigned to PIPE LINERS INC (1)· patent assignee history
2006–2007Based in Gainesville, TX, US· patent location history
2010–2012Patents assigned to ROCKWELL AUTOMATION TECH INC (2)· patent assignee history
2012Patents assigned to CRABTREE JOHN D (1)· patent assignee history
2012Patents assigned to PENICK JERRY LI (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| ROCKWELL AUTOMATION TECH INC | 2 | 2010–2012 |
| CRABTREE JOHN Dself | 1 | 2012 |
| NUARC CO | 1 | 1981 |
| PENICK JERRY LI | 1 | 2012 |
| PIPE LINERS INC | 1 | 2006 |
Locations
| Location | Patents | Span |
|---|---|---|
| Akron, OH, US | 3 | 2000–2012 |
| Gainesville, Texas, US | 2 | 2006–2007 |
| Burnley, GB | 1 | 1985 |
| Cuyahoga Falls, OH, US | 1 | 1981 |