Patent US2901372A successfully refreshed from Google Patents.
US2901372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Strip-resistant bituminous compositions
Assignee: Armour and Co
•
Filing: 1956-09-21
•
Granted: 1959-08-25
•
Expires: 1976-09-21
Abstract
No abstract record available.
Inventors
- 👤 Jack N Dybalski
- 👤 Brow Paul L Du
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:30
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A STRIP-RESISTANT BITUMINOUS COMPOSITION COMPRISING A BITUMEN AND FROM 0.05 TO 2.5 WEIGHT PERCENT OF AN AMINE SALT FORMED BY MIXING TOGETHER BETWEEN 1 AND 2 MOLAR EQUIVALENTS OF A SULFONIC ACID SELECTED FROM THE GROUP CONSISTING OF ALKYLARYL SULFONIC ACIDS HAVING BETWEEN 6 AND 18 CARBON ATOMS IN THE ALKYL RADICAL THEREOF AND ALKYL SULFONIC ACIDS HAVING FROM 1 TO 4 CARBON ATOMS, AND 1 MOLAR EQUIVALENT OF A DIAMINE HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
75 words
A STRIP-RESISTANT BITUMINOUS COMPOSITION COMPRISING A BITUMEN AND FROM 0.05 TO 2.5 WEIGHT PERCENT OF AN AMINE SALT FORMED BY MIXING TOGETHER BETWEEN 1 AND 2 MOLAR EQUIVALENTS OF A SULFONIC ACID SELECTED FROM THE GROUP CONSISTING OF ALKYLARYL SULFONIC ACIDS HAVING BETWEEN 6 AND 18 CARBON ATOMS IN THE ALKYL RADICAL THEREOF AND ALKYL SULFONIC ACIDS HAVING FROM 1 TO 4 CARBON ATOMS, AND 1 MOLAR EQUIVALENT OF A DIAMINE HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US2270681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |