US2820735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing of polymeric linear terephthalate ester structures
Assignee: EIDP Inc
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Filing: 1955-07-08
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Granted: 1958-01-21
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Expires: 1975-07-08
Abstract
No abstract record available.
Inventors
- 👤 Leonard Edward Amborski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:32
CPC Classifications
B; B32; B32B; B32B27/00; C; C08; C08J; C08J5/00; C08J5/12; C08J5/122; C08J2367/00; C08J2367/02; Y; Y10; Y10S; Y10S428/00; Y10S428/91; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A PROCESS FOR UNITING POLYMERIC LINEAR TEREPHTHALATE ESTER STRUCTURES WHICH COMPRISES APPLYING BENZYL ALCOHOL OVER THE AREA OF JUNCTURE OF AT LEAST ONE OF THE TWO SURFACES TO BE UNITED, BRINGING SAID SURFACES TOGETHER, AND THEREAFTER APPLYING PRESSURE AND HEAT AT A TEMPERATURE OF AT LEAST 140*C. OVER THE AREA OF JUNCTURE.
Claim 2
Dependent Claim
52 words
A PROCESS FOR UNITING POLYMERIC LINEAR TEREPHTHALATE ESTER STRUCTURES WHICH COMPRISES APPLYING BENZYL ALCOHOL OVER THE AREA OF JUNCTURE OF AT LEAST ONE OF THE TWO SURFACES TO BE UNITED, BRINGING SAID SURFACES TOGETHER, AND THEREAFTER APPLYING PRESSURE AND HEAT AT A TEMPERATURE OF AT LEAST 140*C. OVER THE AREA OF JUNCTURE.
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) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |