US2750320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing continuous plastic sheets
Assignee: Swedlow Plastics Co
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Filing: 1954-03-29
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Granted: 1956-06-12
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Expires: 1974-03-29
Abstract
No abstract record available.
Inventors
- 👤 Latham Morton Elber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:42
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/22; B29C39/00; B29C39/003; B29C39/006; B29D; B29D7/00; B29D7/01; B29L; B29L2007/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31645; Y10T428/31649
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A PROCESS FOR PREPARING CONTINUOUS PLASTIC SHEETING WHICH COMPRISES PREPARING A FLOWABLE, POLYMERIZABLE SYSTEM CONTAINING ETHYLENICALLY UNSATURATED MONOMERIC MATERIAL, AN ACYLOIN OF THE FORMULA R-CO-CHOH-R'', WHEREIN R AND '' ARE MONOVALENT HYDROCARBON RADICALS, AND AN ORGANIC PEROXIDE; CONTINUOUSLY ENCASING SAID SYSTEM WITHIN A CONTINUOUS FLEXIBLE, TRANSLUCENT WEB, AND CONTINUOUSLY PASSING SAID WEB AND SYSTEM ENCASED THEREIN THROUGH AN AREA OF ULTRA-VIOLET IRRADIATION TO EFFECT POLYMERIZATION OF THE SYSTEM.
Claim 2
Dependent Claim
68 words
A PROCESS FOR PREPARING CONTINUOUS PLASTIC SHEETING WHICH COMPRISES PREPARING A FLOWABLE, POLYMERIZABLE SYSTEM CONTAINING ETHYLENICALLY UNSATURATED MONOMERIC MATERIAL, AN ACYLOIN OF THE FORMULA R-CO-CHOH-R'', WHEREIN R AND '' ARE MONOVALENT HYDROCARBON RADICALS, AND AN ORGANIC PEROXIDE; CONTINUOUSLY ENCASING SAID SYSTEM WITHIN A CONTINUOUS FLEXIBLE, TRANSLUCENT WEB, AND CONTINUOUSLY PASSING SAID WEB AND SYSTEM ENCASED THEREIN THROUGH AN AREA OF ULTRA-VIOLET IRRADIATION TO EFFECT POLYMERIZATION OF THE SYSTEM.
References Cited (Backward Citations)
US2367661A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |