Patent US2780415A successfully refreshed from Google Patents.
Patent US2800463A successfully refreshed from Google Patents.
US2800463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyvinyl acetate powder and process of making the same
Assignee: Shawinigan Resins Corp
•
Filing: 1953-05-14
•
Granted: 1957-07-23
•
Expires: 1973-05-14
Abstract
No abstract record available.
Inventors
- 👤 George O Morrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:29
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; C08J3/16; C09; C09D; C09D131/00; C09D131/02; C09D131/04; C08J2331/00; C08J2331/02; C08J2331/04; C08L; C08L29/00; C08L29/02; C08L29/04; Y; Y10; Y10S; Y10S159/00; Y10S159/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A DRY POLYVINYL ACETATE POWDER DERIVED FROM AN ORIGINAL AQUEOUS EMULSION AND CONTAINING ORIGINAL EMULSIFYING AGENT DISPERSED THROUGHTOUT THE POWDER, THE POWDER CONTAINING THE ORIGINAL EMULSION PARTICLES IN UNSINTERED FROM, AND THE POWDER BEING COMPOSED LARGELY OF PARTICLES OF A DIAMETER UP TO 5 MICRONS AND AGGREGATES OF SAID UNSINTERED PARTICLES, SAID POWDER BEING REDISPERSIBLE ON MIXING WITH WATER
Claim 2
Dependent Claim
59 words
A DRY POLYVINYL ACETATE POWDER DERIVED FROM AN ORIGINAL AQUEOUS EMULSION AND CONTAINING ORIGINAL EMULSIFYING AGENT DISPERSED THROUGHTOUT THE POWDER, THE POWDER CONTAINING THE ORIGINAL EMULSION PARTICLES IN UNSINTERED FROM, AND THE POWDER BEING COMPOSED LARGELY OF PARTICLES OF A DIAMETER UP TO 5 MICRONS AND AGGREGATES OF SAID UNSINTERED PARTICLES, SAID POWDER BEING REDISPERSIBLE ON MIXING WITH WATER
References Cited (Backward Citations)
US626182A
Cited
US2290794A
Cited
US2392135A
Cited
US2355919A
Cited
US2371618A
Cited
US2462354A
Cited
US2444396A
Cited
US2508341A
Cited
US2585967A
Cited
US2671065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |