US3738852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cationic bituminous emulsion
Assignee: Kao Corp
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Filing: 1971-05-17
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Granted: 1973-06-12
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Expires: 1991-05-17
Abstract
Abstract AN ASPHALT-IN-WATER EMULSION IN WHICH THERE IS AN EMULSIFIER COMPRISED OF A MIXTURE OF A WATER-SOLUBLE SALT OF A MONOAMINE HAVING A LONG CHAIN ALKYL OR ALKENYL GROUP OF 8 TO 22 CARBON ATOMS AND A WATER-SOLUBLE SALT OF A TRIAMINE HAVING A LONG CHAIN ALKYL OR ALKENYL GROUP OF 8 TO 12 CARBON ATOMS.
Inventors
- 👤 T Doi
- 👤 S Ohtsuka
- 👤 S Arai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:55
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |