Inventor
Thomas W. Lewis
Inventor
Bethel Park, PA, US
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B22Dprimary
B22DCasting of metals50%
C21BManufacture of iron or steel25%
A47KSanitary equipment13%
B28CPreparing clay13%
PatentTitleYear
5,354,128'Concrete mixer chute cap'19945,318,277'Lined ladles, linings therefor, and method of forming the same'19944,993,692'Unitary tundish linings with flow-control devices'19914,942,986'Pressurized tundish for controlling a continuous flow of molten metal'19904,915,270'Low-head feeding system for thin section castings'19904,662,577'Toilet tissue dispenser'1987Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1987Based in Garberville, CA, US· patent location history
1990–1994Patents assigned to LEWIS THOMAS W (3)· patent assignee history
1990Patents assigned to BRITA GUIDO P (1)· patent assignee history
1990Patents assigned to HAMILL JR PAUL E (1)· patent assignee history
1990–1994Based in Bethel Park, PA, US· patent location history
1990Based in Allegheny County, PA, US· patent location history
1991Patents assigned to BROWN WILLIAM K (1)· patent assignee history
1994Patents assigned to DRESSER IND (1)· patent assignee history
1994Based in San Jose, CA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| LEWIS THOMAS Wself | 3 | 1990–1994 |
| BRITA GUIDO P | 1 | 1990 |
| BROWN WILLIAM K | 1 | 1991 |
| DRESSER IND | 1 | 1994 |
| HAMILL JR PAUL E | 1 | 1990 |
Locations
| Location | Patents | Span |
|---|---|---|
| Bethel Park, Pennsylvania, US | 3 | 1990–1994 |
| San Jose, California, US | 1 | 1994 |
| Allegheny County, Pennsylvania, US | 1 | 1990 |
| Garberville, California, US | 1 | 1987 |