US3366599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyacetals stabilized with styrenated phenols
Assignee: Hoechst AG
•
Filing: 1963-09-25
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Granted: 1968-01-30
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Expires: 1983-09-25
Abstract
No abstract record available.
Inventors
- 👤 Heuck Claus
- 👤 Roos Gunther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:07
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/11; C07C37/14; C08; C08K; C08K5/00; C08K5/04; C08K5/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A COMPOSITION COMPRISING A POLYACETAL SELECTED FROM THE GROUP CONSISTING OF HOMOPOLYMERS OF FORMALDEHYDE OR TRIOXANE AND COPOLYMERS WHOSE RECURRING UNITS CONSIST ESSENTIALLY OF (A) -O-CH2- UNITS INTERSPERSED WITH (B) UNITS OF THE FORMULA
Claim 2
Dependent Claim
34 words
A COMPOSITION COMPRISING A POLYACETAL SELECTED FROM THE GROUP CONSISTING OF HOMOPOLYMERS OF FORMALDEHYDE OR TRIOXANE AND COPOLYMERS WHOSE RECURRING UNITS CONSIST ESSENTIALLY OF (A) -O-CH2- UNITS INTERSPERSED WITH (B) UNITS OF THE FORMULA
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) | 1971-01-29 | 1971-07-31 | 1972-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-29 | 1975-07-31 | 1976-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-29 | 1979-07-31 | 1980-01-30 | $7700.00 | Window Closed / Lapsed |