US2817618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminates and process for the production thereof
Assignee: Individual
•
Filing: 1957-02-14
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Granted: 1957-12-24
•
Expires: 1977-02-14
Abstract
No abstract record available.
Inventors
- 👤 Hahn Robert Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:48
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1023; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
THE PROCESS WHICH COMPRISES HEATING SUBSTANTIALLY UNIFORMLY THROUGHOUT ITS THICKNESS A SHEET OF THERMOPLASTIC RESINOUS MATERIAL TO A TEMPERATURE OF ABOUT 300*F. TO ABOUT 400*F., PYHSICALLY TREATING THE SO-FORMED SHEET WHILE SAID SHEET IS STILL HOT FROM THE HEATING STEP AND BEFORE THE SHEET HAS COOLED TO A TEMPERATURE BELOW ABOUT 275*F. TO IMPART THERETO A PHYSICALLY MODIFIED SURFACE FINISH, COOLING THE SURFACE FINISHED SHEET, PASSING THE SURFACE FINISHED SHEET, WITH THE PHYSICALLY MODIFIED SURFACE EXPOSED, TO A METAL SURFACE PREHEATED TO A TEMPERATURE OF AT LEAST ABOUT 225*F., BUT SUBSTANTIALLY LOWER THAN THE TEMPERATURE AT WHICH THE SHEET WAS FINISHED, SAID METAL SURFACE BEARING AN ADHESIVE COMPOSITION ACTIVATED UNDER THE CONDITIONS, AND COOLING THE LAMINATE SO-FORMED.
Claim 2
Dependent Claim
117 words
THE PROCESS WHICH COMPRISES HEATING SUBSTANTIALLY UNIFORMLY THROUGHOUT ITS THICKNESS A SHEET OF THERMOPLASTIC RESINOUS MATERIAL TO A TEMPERATURE OF ABOUT 300*F. TO ABOUT 400*F., PYHSICALLY TREATING THE SO-FORMED SHEET WHILE SAID SHEET IS STILL HOT FROM THE HEATING STEP AND BEFORE THE SHEET HAS COOLED TO A TEMPERATURE BELOW ABOUT 275*F. TO IMPART THERETO A PHYSICALLY MODIFIED SURFACE FINISH, COOLING THE SURFACE FINISHED SHEET, PASSING THE SURFACE FINISHED SHEET, WITH THE PHYSICALLY MODIFIED SURFACE EXPOSED, TO A METAL SURFACE PREHEATED TO A TEMPERATURE OF AT LEAST ABOUT 225*F., BUT SUBSTANTIALLY LOWER THAN THE TEMPERATURE AT WHICH THE SHEET WAS FINISHED, SAID METAL SURFACE BEARING AN ADHESIVE COMPOSITION ACTIVATED UNDER THE CONDITIONS, AND COOLING THE LAMINATE SO-FORMED.
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) | 1960-12-23 | 1961-06-24 | 1961-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-23 | 1965-06-24 | 1965-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-23 | 1969-06-24 | 1969-12-24 | $7700.00 | Window Closed / Lapsed |