US2861049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solution of polyethylene terephthalate in o-nitrobenzaldehyde and process of preparation
Assignee: Hoechst AG
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Filing: 1954-02-19
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Granted: 1958-11-18
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Expires: 1974-02-19
Abstract
No abstract record available.
Inventors
- 👤 Fuchs Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:18
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08J3/096; C08K; C08K5/00; C08K5/0008; C08K5/0016; C08K5/04; C08K5/07; C08L; C08L67/00; C08L67/02; F; F16; F16F; F16F9/00; F16F9/06; C08J2367/00; C08J2367/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A COMPOSITION OF MATTER COMPRISING A SOLUTION OF POLYETHYLENE TEREPHTHALATE IN ORTHO-NITROBENZALDEHYDE.
Claim 2
Dependent Claim
12 words
A COMPOSITION OF MATTER COMPRISING A SOLUTION OF POLYETHYLENE TEREPHTHALATE IN ORTHO-NITROBENZALDEHYDE.
References Cited (Backward Citations)
GB609947A
Cited
US2762788A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |