Inventor
Ralph W. Colpitts
Inventor
St. Louis, MO, US
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A61Cprimary
A61CDentistry64%
A61KPreparations for medical, dental or toiletry purposes18%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests18%
PatentTitleYear
4,360,344'Composite denture combining soft polyurethane and hard polymer components'19824,281,992'Prosthetic denture prepared from polyurethane elastomer'19814,225,696'Prosthetic denture prepared from polyurethane elastomer'19804,115,488'Dentures and process for making the same'19784,080,412'Dentures and process for making the same'19784,024,636'Dentures'19774,024,637'Dentures and process for making the same'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1982Patents assigned to POLYTHETICS INC (7)· patent assignee history
1977–1978Based in St. Louis, MO, US· patent location history
1980–1982Based in Chesterfield, MO, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| POLYTHETICS INC | 7 | 1977–1982 |
Locations
| Location | Patents | Span |
|---|---|---|
| St. Louis, MO, US | 4 | 1977–1978 |
| Chesterfield, MO, US | 3 | 1980–1982 |