US3257348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyvinyl alcohol composition with phosphate esters of ethoxylated alkyl phenols and polyoxyethylene aryl ether
Assignee: Reynolds Metals Co
•
Filing: 1963-01-15
•
Granted: 1966-06-21
•
Expires: 1983-01-15
Abstract
No abstract record available.
Inventors
- 👤 Campbell F Epes
- 👤 Leonard R Corazzi
- 👤 Alexander J Marsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:42
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/06; C08K5/49; C08K5/51; C08K5/52; C08K5/521; C08K5/523
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A POLYVINYL ALCOHOL FILM FORMING COMPOSITION WHICH IS RESISTANT TO CHLORINE-CONTAINING BLEACHES, COMPRISING AN INCOMPLETELY HYDROLYZED POLYVINYL ALCOHOL, AND BASED UPON THE WEIGHT OF THE POLYVINYL ALCOHOL FROM ABOUT 5% TO ABOUT 30% OF A POLYOXYETHYLENE ARYL ETHER, AND FROM ABOUT 5% TO ABOUT 50% OF AN ALKALI METAL SALT OF MIXED PHOSPHATE ESTERS OF AN ETHOXYLATED HIGHER ALKYL PHENOL.
Claim 2
Dependent Claim
60 words
A POLYVINYL ALCOHOL FILM FORMING COMPOSITION WHICH IS RESISTANT TO CHLORINE-CONTAINING BLEACHES, COMPRISING AN INCOMPLETELY HYDROLYZED POLYVINYL ALCOHOL, AND BASED UPON THE WEIGHT OF THE POLYVINYL ALCOHOL FROM ABOUT 5% TO ABOUT 30% OF A POLYOXYETHYLENE ARYL ETHER, AND FROM ABOUT 5% TO ABOUT 50% OF AN ALKALI METAL SALT OF MIXED PHOSPHATE ESTERS OF AN ETHOXYLATED HIGHER ALKYL PHENOL.
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) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |