Patent US3106543A successfully refreshed from Google Patents.
US3106543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reaction product of an alkylene oxidepolyvinyl alcohol mixture with untreated polyvinyl alcohol
Assignee: EIDP Inc
•
Filing: 1960-04-12
•
Granted: 1963-10-08
•
Expires: 1980-04-12
Abstract
No abstract record available.
Inventors
- 👤 John N Milne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:07
CPC Classifications
C; C08; C08F; C08F8/00; Y; Y10; Y10S; Y10S8/00; Y10S8/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A METHOD FOR PRODUCING A FILM-FORMING MIXTURE COMPRISING THE STEP OF REACTING AT 10* TO 150* C. AN ALKYLENE OXIDE HAVING 2 TO 5 CARBON ATOMS WITH AN AQUEOUS SOLUTION CONTAINING 5 TO 30% BY WEIGHT DISSOLVED POLYVINYL ALCOHOL IN THE RATIO OF 0.01 TO 2 PARTS BY WEIGHT OF SAID OXIDE FOR EACH PART BY WEIGHT OF DISSOLVED POLYVINYL ALCOHOL, AND THE STEP OF MIXING WITH SAID REACTION MEDIUM SUFFICIENT UNTREATED POLYVINYL ALCOHOL TO REDUCE THE AMOUNT OF COMBINED ALKYLENE OXIDE TO 5 TO 50% BY WEIGHT BASED ON THE TOTAL AMOUNT OF POLYVINYL ALCOHOL USED.
Claim 2
Independent Claim
97 words
A METHOD FOR PRODUCING A FILM-FORMING MIXTURE COMPRISING THE STEP OF REACTING AT 10* TO 150* C. AN ALKYLENE OXIDE HAVING 2 TO 5 CARBON ATOMS WITH AN AQUEOUS SOLUTION CONTAINING 5 TO 30% BY WEIGHT DISSOLVED POLYVINYL ALCOHOL IN THE RATIO OF 0.01 TO 2 PARTS BY WEIGHT OF SAID OXIDE FOR EACH PART BY WEIGHT OF DISSOLVED POLYVINYL ALCOHOL, AND THE STEP OF MIXING WITH SAID REACTION MEDIUM SUFFICIENT UNTREATED POLYVINYL ALCOHOL TO REDUCE THE AMOUNT OF COMBINED ALKYLENE OXIDE TO 5 TO 50% BY WEIGHT BASED ON THE TOTAL AMOUNT OF POLYVINYL ALCOHOL USED.
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) | 1966-10-07 | 1967-04-08 | 1967-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-07 | 1971-04-08 | 1971-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-07 | 1975-04-08 | 1975-10-08 | $7700.00 | Window Closed / Lapsed |