US3042574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making laminated structures
Assignee: EIDP Inc
•
Filing: 1958-08-29
•
Granted: 1962-07-03
•
Expires: 1978-08-29
Abstract
No abstract record available.
Inventors
- 👤 Hochberg Jerome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:43
CPC Classifications
B; B32; B32B; B32B37/00; B29; B29C; B29C43/00; B29C43/32; B29C43/36; B29C43/3642; B29C70/00; B29C70/04; B29C70/06; B29C70/08; B29C70/28; B29C70/40; B29C70/42; B29C70/44; B29C70/54; B29C70/542; B32B15/00; B32B15/04; B32B15/08; B32B27/00; B29C2043/3644; B29C43/02; B29C43/10; B29C43/12; B29K; B29K2027/00; B29K2027/12; B29K2027/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
THE METHOD OF PREPARING DENSE LAMINATES WHICH COMPRISES: (A) ARRANGING A PLURALITY OF SUPERPOSED PLIES OF REINFORCED POLYTETRAFLUOROETHYLENE SHEET MATERIAL IN DIRECT CONTACT WITH EACH OTHER, (B) PLACING SAID SUPERPOSED PLIES IN AN AIR IMPERMEABLE ENVELOPE AT LEAST ONE SIDE OF WHICH IS COLLAPSIBLE, (C) EVACUATING A SUBSTANTIAL PORTION OF THE AIR FROM WITHIN SAID ENVELOPE TO A PRESSURE OF LESS THAN ABOUT 380 MM. OF MERCURY WITHIN SAID ENVELOPE, (D) HEATING SAID PLIES WHILE UNDER SAID SUB-ATMOSPHERIC PRESSURE TO AT LEAST 621*F. TO BOND SAID PLIES INTO AN INTEGRAL LAMINATE, (E) COOLING SAID LAMINATE, AND (F) REMOVING SAID LAMINATE FROM SAID ENVELOPE.
Claim 2
Independent Claim
103 words
THE METHOD OF PREPARING DENSE LAMINATES WHICH COMPRISES: (A) ARRANGING A PLURALITY OF SUPERPOSED PLIES OF REINFORCED POLYTETRAFLUOROETHYLENE SHEET MATERIAL IN DIRECT CONTACT WITH EACH OTHER, (B) PLACING SAID SUPERPOSED PLIES IN AN AIR IMPERMEABLE ENVELOPE AT LEAST ONE SIDE OF WHICH IS COLLAPSIBLE, (C) EVACUATING A SUBSTANTIAL PORTION OF THE AIR FROM WITHIN SAID ENVELOPE TO A PRESSURE OF LESS THAN ABOUT 380 MM. OF MERCURY WITHIN SAID ENVELOPE, (D) HEATING SAID PLIES WHILE UNDER SAID SUB-ATMOSPHERIC PRESSURE TO AT LEAST 621*F. TO BOND SAID PLIES INTO AN INTEGRAL LAMINATE, (E) COOLING SAID LAMINATE, AND (F) REMOVING SAID LAMINATE FROM SAID ENVELOPE.
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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) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |