Patent US2544140A successfully refreshed from Google Patents.
US2544140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of forming an article from at least two plastics
Assignee: Individual
•
Filing: 1947-12-09
•
Granted: 1951-03-06
•
Expires: 1967-12-09
Abstract
No abstract record available.
Inventors
- 👤 Floyd J Dofsen
- 👤 Elmer L Danielson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:53
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/16; B29C45/1615
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
THE HERERIN DESCRIBED METHOD OF FORMING AN ARTICLE FROM THE MORE THAN ONE PLASTIC CONSISTING OF PLACING A PREFORMED PLASTIC STRUCTURE COMPRISING A HOLLOW BODY WITH A SLOT EXTENDING THERETHROUGH A MAIN SPRUE AND A BRANCH SPRUE CONNECTING THE BODY AND MAIN SPRUE INTO A MOLD HAVING CHANNELS OF GREATER SIZE THAN SAID FIRST MENTIONED SPRUES, WITH SAID SPRUES IN SAID CHANNELS, OF INJECTING A SECOND PLASTIC THROUGH THE CHANNELS INTO SAID SLOT SO THAT THE SPRUES FORMED BY THE SECOND PLASTIC LIE ADJACENT SAID PREFORMED SPRUES.
Claim 2
Dependent Claim
87 words
THE HERERIN DESCRIBED METHOD OF FORMING AN ARTICLE FROM THE MORE THAN ONE PLASTIC CONSISTING OF PLACING A PREFORMED PLASTIC STRUCTURE COMPRISING A HOLLOW BODY WITH A SLOT EXTENDING THERETHROUGH A MAIN SPRUE AND A BRANCH SPRUE CONNECTING THE BODY AND MAIN SPRUE INTO A MOLD HAVING CHANNELS OF GREATER SIZE THAN SAID FIRST MENTIONED SPRUES, WITH SAID SPRUES IN SAID CHANNELS, OF INJECTING A SECOND PLASTIC THROUGH THE CHANNELS INTO SAID SLOT SO THAT THE SPRUES FORMED BY THE SECOND PLASTIC LIE ADJACENT SAID PREFORMED SPRUES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |