US2886480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processes for bonding polymerisable substances
Assignee: Siemens Edison Swan Ltd
•
Filing: 1954-11-23
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Granted: 1959-05-12
•
Expires: 1974-11-23
Abstract
No abstract record available.
Inventors
- 👤 Deakin Stanley Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:03
CPC Classifications
B; B32; B32B; B32B27/00; B29; B29C; B29C70/00; B29C70/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A PROCESS FOR THE BONDING OF POLYTETRAFLUOROETHYLENE PLASTIC MATERIAL WITH A SECOND SUBSTANCE INCAPABLE OF WITHSTANDING THE MOULDING TEMPERATURE OF THE POLYTETRAFLUOROETHYLENE INCLUDING THE STEPS OF PRE-FORMING THE POLYTETRAFLUORTHYLENE BY COMPRESSING LOOSE GRANULES THEREOF INTO A SEMI-COMPACTED BLOCK, SPRAYING DIRECTLY ON TO THE SURFACE OF SAID BLOCK SOLID PARTICLES OF MATERIAL HAVING A HIGHER MELTING TEMPERATURE THAN THE MOULDING TEMPERATURE OF THE POLYTETRAFLUOROETHYLENE, THEREAFTER FURTHER COLD COMPRESSING THE POLYTETRAFLUOROETHYLENE GRANULES SO THAT THE SOLID PARTICLES ARE EMBEDDED FIRMLY BETWEEN THE GRANULES AND PROJECT PARTLY FROM THE SURFACE OF THE BLOCK, SUBSEQUENTLY APPLYING A MOULDING TEMPERATURE TO THE POLYTETRAFLUOROETHYLENE, AND FINALLY APPLYING THE SECOND SUBSTANCE TO THE SURFACE OF THE BLOCK FROM WHICH THE PARTICLES PROJECT SO THAT THE SECOND SUBSTANCE ADHERES TO THE PARTICLES AND IS THEREBY BONDED TO THE POLYTETRAFLUOROETHYLENE.
Claim 2
Dependent Claim
131 words
A PROCESS FOR THE BONDING OF POLYTETRAFLUOROETHYLENE PLASTIC MATERIAL WITH A SECOND SUBSTANCE INCAPABLE OF WITHSTANDING THE MOULDING TEMPERATURE OF THE POLYTETRAFLUOROETHYLENE INCLUDING THE STEPS OF PRE-FORMING THE POLYTETRAFLUORTHYLENE BY COMPRESSING LOOSE GRANULES THEREOF INTO A SEMI-COMPACTED BLOCK, SPRAYING DIRECTLY ON TO THE SURFACE OF SAID BLOCK SOLID PARTICLES OF MATERIAL HAVING A HIGHER MELTING TEMPERATURE THAN THE MOULDING TEMPERATURE OF THE POLYTETRAFLUOROETHYLENE, THEREAFTER FURTHER COLD COMPRESSING THE POLYTETRAFLUOROETHYLENE GRANULES SO THAT THE SOLID PARTICLES ARE EMBEDDED FIRMLY BETWEEN THE GRANULES AND PROJECT PARTLY FROM THE SURFACE OF THE BLOCK, SUBSEQUENTLY APPLYING A MOULDING TEMPERATURE TO THE POLYTETRAFLUOROETHYLENE, AND FINALLY APPLYING THE SECOND SUBSTANCE TO THE SURFACE OF THE BLOCK FROM WHICH THE PARTICLES PROJECT SO THAT THE SECOND SUBSTANCE ADHERES TO THE PARTICLES AND IS THEREBY BONDED TO THE POLYTETRAFLUOROETHYLENE.
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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) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |