US3051992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous curing of polymeric materials
Assignee: Cabot Corp
•
Filing: 1960-05-20
•
Granted: 1962-09-04
•
Expires: 1980-05-20
Abstract
No abstract record available.
Inventors
- 👤 John M Bradley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:38
CPC Classifications
B; B29; B29C; B29C35/00; B29C35/16; B29C35/02; B29C35/04; B29C35/06; B29C48/00; B29C48/03; B29C48/06; B29C48/09; B29C48/25; B29C48/88; B29C48/90; B29C48/908; B29C48/91; B29C48/919; B29C35/041; B29C2035/042; B29C2035/1616; B29K; B29K2023/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A PROCESS OF CONTINUOUSLY PRODUCING A THROUGHLY CURED YET SMOOTH SURFACED, DISTORTION FREE, FORM STABLE PLASTIC ARTICLE FROM A POLYMERIC COMPOSITION WHICH MUST BE CURED AT A TEMPERATURE ABOVE THE NO-STRENGTH OR MELTING POINT THEREOF, COMPRISING EXTRUDING SAID POLYMERIC COMPOSITION THROUGH A PASSAGE OF THE APPROXIMATE CROSSSECTIONAL SHAPE DESIRED IN THE FINISHED ARTICLE AND THEN CON-
Claim 2
Dependent Claim
56 words
A PROCESS OF CONTINUOUSLY PRODUCING A THROUGHLY CURED YET SMOOTH SURFACED, DISTORTION FREE, FORM STABLE PLASTIC ARTICLE FROM A POLYMERIC COMPOSITION WHICH MUST BE CURED AT A TEMPERATURE ABOVE THE NO-STRENGTH OR MELTING POINT THEREOF, COMPRISING EXTRUDING SAID POLYMERIC COMPOSITION THROUGH A PASSAGE OF THE APPROXIMATE CROSSSECTIONAL SHAPE DESIRED IN THE FINISHED ARTICLE AND THEN CON-
References Cited (Backward Citations)
US2139414A
Cited
US2125001A
Cited
GB541566A
Cited
US2451986A
Cited
US2897547A
Cited
US2971221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-03 | 1966-03-05 | 1966-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-03 | 1970-03-05 | 1970-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-03 | 1974-03-05 | 1974-09-04 | $7700.00 | Window Closed / Lapsed |