US2554150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of manufacturing thermoplastic material
Assignee: Wingfoot Corp
•
Filing: 1948-04-27
•
Granted: 1951-05-22
•
Expires: 1968-04-27
Abstract
No abstract record available.
Inventors
- 👤 Robert L Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:00
CPC Classifications
B; B32; B32B; B32B27/00; B29; B29C; B29C43/00; B29C43/22; B29C43/30; B29C43/305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
THE METHOD OF MAKING A PRODUCT EMBODYING A PLURALITY OF SUPERPOSED LAMINAE OF THERMOPLASTIC MATERIAL PRODUCED BY THE DEFORMATION OF A MASS OF THE MATERIAL WHICH INDUCES SHRINKAGE IN THE LAMINAE DUE TO THE INTERNAL STRESSES CREATED THEREIN IN THEIR FORMATION, SAID METHOD COMPRISING THE STEPS OF SUBJECTING THE SUPERPOSED LAMINAE TO THE APPLICATION OF HEAT WHILE THE LAMINAE ARE SUPPORTED IN RELAXED CONDITION AND FREE FROM THE APPLICATION OF PRESSURE THERETO TO RELIEVE THE INTERNAL STRESSES IN THE INDIVIDUAL LAMINAE AND TO RENDER THEM TACKY; SEPARATING THE SUPERPOSED LAMINAE TO PERMIT THE ESCAPE OF ENTRAPPED AIR AND GASES WITHOUT VARYING THE SUPER-
Claim 2
Independent Claim
103 words
THE METHOD OF MAKING A PRODUCT EMBODYING A PLURALITY OF SUPERPOSED LAMINAE OF THERMOPLASTIC MATERIAL PRODUCED BY THE DEFORMATION OF A MASS OF THE MATERIAL WHICH INDUCES SHRINKAGE IN THE LAMINAE DUE TO THE INTERNAL STRESSES CREATED THEREIN IN THEIR FORMATION, SAID METHOD COMPRISING THE STEPS OF SUBJECTING THE SUPERPOSED LAMINAE TO THE APPLICATION OF HEAT WHILE THE LAMINAE ARE SUPPORTED IN RELAXED CONDITION AND FREE FROM THE APPLICATION OF PRESSURE THERETO TO RELIEVE THE INTERNAL STRESSES IN THE INDIVIDUAL LAMINAE AND TO RENDER THEM TACKY; SEPARATING THE SUPERPOSED LAMINAE TO PERMIT THE ESCAPE OF ENTRAPPED AIR AND GASES WITHOUT VARYING THE SUPER-
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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) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |