US3335207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for forming foamed low density sheet plastic
Assignee: OI Glass Inc
•
Filing: 1963-10-11
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Granted: 1967-08-08
•
Expires: 1983-10-11
Abstract
No abstract record available.
Inventors
- 👤 Carlton A Richie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:34
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/18; B29C51/20; B29C51/24; B29C44/00; B29C44/20; B29C44/26; B29C44/34; B29C44/3415; B29C44/56; B29C44/5627; B29C44/5636; B29C33/00; B29C33/38; B29C33/3814
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A METHOD OF FURTHER EXPANDING A PARTIALLY EXPANDED SHEET OF FOAMED, CELLULAR THREMOPLASTIC WHICH COMPRISES IMPARTING A CONTINUOUS, UNIFORM, LINEAR AND TRANSVERSE TENSION IN THE SHEET, ADVANCING THE SHEET AND CONTACTING ONE SIDE THEREOF WHILE UNDER SAID TENSION WITH AT LEAST ONE POROUS MEMBER, SIMULTANEOUSLY CONTACTING THE SHEET WITH A HEATED FLUID EMITTED FROM SAID MEMBERS SO AS TO EXPAND THE SHEET, AND THEREAFTER COOLING AND PERMANENTLY SETTING THE FURTHER EXPANDED SHEET.
Claim 2
Independent Claim
72 words
A METHOD OF FURTHER EXPANDING A PARTIALLY EXPANDED SHEET OF FOAMED, CELLULAR THREMOPLASTIC WHICH COMPRISES IMPARTING A CONTINUOUS, UNIFORM, LINEAR AND TRANSVERSE TENSION IN THE SHEET, ADVANCING THE SHEET AND CONTACTING ONE SIDE THEREOF WHILE UNDER SAID TENSION WITH AT LEAST ONE POROUS MEMBER, SIMULTANEOUSLY CONTACTING THE SHEET WITH A HEATED FLUID EMITTED FROM SAID MEMBERS SO AS TO EXPAND THE SHEET, AND THEREAFTER COOLING AND PERMANENTLY SETTING THE FURTHER EXPANDED SHEET.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |