US3000868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinyl toluene-alpha methyl styrene polymers
Assignee: Pennsylvania Industrial Chemical Corp
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Filing: 1959-12-30
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Granted: 1961-09-19
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Expires: 1979-12-30
Abstract
No abstract record available.
Inventors
- 👤 Paul O Powers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:51
CPC Classifications
C; C08; C08F; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
56 words
RESIN CONSISTING ESSENTIALLY OF A COPOLYMER OF, BY WEIGHT, 25 TO 35 PERCENT OF ALPHA METHYL STYRENE AND 75 TO 65 PERCENT OF VINYL TOLUENE, SAID RESIN BEING OF LOW COLOR, OF 100* TO 130*C. SOFTENING POINT (BALL AND RING), AND OF GOOD SOLUBILITY IN LOW ODOR MINERAL SPIRITS AND LOW KAURI-BUTANOL SOLVENTS DOWN TO 0*C.
References Cited (Backward Citations)
US2474671A
Cited
US2773052A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |