US3141859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solutions of polyesters
Assignee: SI Group Inc
•
Filing: 1960-09-26
•
Granted: 1964-07-21
•
Expires: 1980-09-26
Abstract
No abstract record available.
Inventors
- 👤 Howard E Sheffer
- 👤 Manuel A Jordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:30
CPC Classifications
C; C09; C09D; C09D167/00; C09D167/02; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF A SOLUTION OF POLYETHYLENE TEREPHTHALATE IN A SOLVENT CONSISTING ESSENTIALLY OF MONOCHLOROPHENOL AND A MEMBER SELECTED FROM THE GROUP CONSISTING OF A CRESOL AND MIXTURES OF A CRESOL WITH PHENOL, SAID MONOCHLOROPHENOL BEING 30 TO 50% OF THE WEIGHT OF THE TOTAL SOLVENT.
Claim 2
Dependent Claim
50 words
A COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF A SOLUTION OF POLYETHYLENE TEREPHTHALATE IN A SOLVENT CONSISTING ESSENTIALLY OF MONOCHLOROPHENOL AND A MEMBER SELECTED FROM THE GROUP CONSISTING OF A CRESOL AND MIXTURES OF A CRESOL WITH PHENOL, SAID MONOCHLOROPHENOL BEING 30 TO 50% OF THE WEIGHT OF THE TOTAL SOLVENT.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |