US3092600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified polyvinyl acetate powders and compositions
Assignee: Kanegafuchi Spinning Co Ltd
•
Filing: 1960-09-15
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Granted: 1963-06-04
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Expires: 1980-09-15
Abstract
No abstract record available.
Inventors
- 👤 Ozawa Toshio
- 👤 Yamashita Takao
- 👤 Hayashi Sigeo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:25
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; Y; Y10; Y10S; Y10S526/00; Y10S526/909
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
DRY POWER COMPOSITION WHICH COMPRISES A SPRAY DRIED POWDER OF COPOLYMER OF VINYL ACETATE AND ABOUT 0.3 TO 10 MOLAR PERCENT OF AT LEAST ONE MONO-OLEFINIC CARBOXYLIC ACID OF 3 TO 4 CARBONS, AN AMMONIUM SALT OF A WEAK ACID HAVING A DISSACIATION CONSTANT LESS THAN 10-1, AND AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF ZINC OXIDE, CALCIUM OXIDE, ZINC HYDROXIDE AND CALCIUM HYDROXIDE, SAID AMMONIUM SALT BEING PRESENT IN AN AMOUNT ABOUT 1 TO 2 TIMES THE STOICHIOMETRIC EQUIVALENT WITH RESPECT TO THE ACID MONOMER, AND THE AMOUNT OF SAID COMPOUND BEING 0.5 TO 2 MOLES PER MOLE OF AMMONIUM SALT.
Claim 2
Dependent Claim
105 words
DRY POWER COMPOSITION WHICH COMPRISES A SPRAY DRIED POWDER OF COPOLYMER OF VINYL ACETATE AND ABOUT 0.3 TO 10 MOLAR PERCENT OF AT LEAST ONE MONO-OLEFINIC CARBOXYLIC ACID OF 3 TO 4 CARBONS, AN AMMONIUM SALT OF A WEAK ACID HAVING A DISSACIATION CONSTANT LESS THAN 10-1, AND AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF ZINC OXIDE, CALCIUM OXIDE, ZINC HYDROXIDE AND CALCIUM HYDROXIDE, SAID AMMONIUM SALT BEING PRESENT IN AN AMOUNT ABOUT 1 TO 2 TIMES THE STOICHIOMETRIC EQUIVALENT WITH RESPECT TO THE ACID MONOMER, AND THE AMOUNT OF SAID COMPOUND BEING 0.5 TO 2 MOLES PER MOLE OF AMMONIUM SALT.
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) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |