US2803041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrusion of plastic materials
Assignee: Celanese Corp
•
Filing: 1953-02-11
•
Granted: 1957-08-20
•
Expires: 1973-02-11
Abstract
No abstract record available.
Inventors
- 👤 Hill John
- 👤 Arpad P Berger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:17
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/16; B29C48/17; B29C48/175; B29C48/03; B29C48/07; B29C48/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
AN APPARATUS FOR THE EXTRUSION OF THERMOPLASTIC MATERIALS, SAID APPARATUS COMPRISING MEANS PROVIDING A PASSAGEWAY, MEANS FOR FORCING A CONTINUOUS STREAM OF THERMOSPLASTIC MATERIAL IN A HIGHLY PLASTIC STATE THROUGH SAID PASSAGEWAY UNDER PRESSURE AND MEANS FOR INJECTING A DIFFERENT THERMOPLASTIC MATERIAL UNDER PRESSURE INTO SAID STREAM AT FIXED POINTS SPACED LATERALLY ALONG THE WIDTH OF SAID STREAM AND WITHIN SAID CONTINUOUS STREAM, SAID MEANS PROJECTING FOR DIFFERENT DEPTHS INTO SAID STREAM SO THAT THE THERMOPLASTIC MATERIAL INJECTED INTO THE CONTINUOUS STREAM WILL BE SPACED DIFFERENT DISTANCES FROM THE SURFACE OF THE PRODUCT OBTAINED.
Claim 2
Independent Claim
94 words
AN APPARATUS FOR THE EXTRUSION OF THERMOPLASTIC MATERIALS, SAID APPARATUS COMPRISING MEANS PROVIDING A PASSAGEWAY, MEANS FOR FORCING A CONTINUOUS STREAM OF THERMOSPLASTIC MATERIAL IN A HIGHLY PLASTIC STATE THROUGH SAID PASSAGEWAY UNDER PRESSURE AND MEANS FOR INJECTING A DIFFERENT THERMOPLASTIC MATERIAL UNDER PRESSURE INTO SAID STREAM AT FIXED POINTS SPACED LATERALLY ALONG THE WIDTH OF SAID STREAM AND WITHIN SAID CONTINUOUS STREAM, SAID MEANS PROJECTING FOR DIFFERENT DEPTHS INTO SAID STREAM SO THAT THE THERMOPLASTIC MATERIAL INJECTED INTO THE CONTINUOUS STREAM WILL BE SPACED DIFFERENT DISTANCES FROM THE SURFACE OF THE PRODUCT OBTAINED.
References Cited (Backward Citations)
US817080A
Cited
US1428381A
Cited
US2138378A
Cited
US2174779A
Cited
US2261977A
Cited
US2558791A
Cited
US2632204A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |