US2663648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermally stable bituminous bonding compositions
Assignee: Individual
•
Filing: 1950-11-21
•
Granted: 1953-12-22
•
Expires: 1970-11-21
Abstract
No abstract record available.
Inventors
- 👤 Jelling Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:10
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A BITUMINOUS COMPOSITION CONTAINING A THERMALLY STABLE BONDING AGENT SELECTED FROM THE GROUP CONSISTING OF N-DIALKYLAMINOALKYLAMIDES CORRESPONDING TO THE GENERAL FORMULA:
Claim 2
Dependent Claim
21 words
A BITUMINOUS COMPOSITION CONTAINING A THERMALLY STABLE BONDING AGENT SELECTED FROM THE GROUP CONSISTING OF N-DIALKYLAMINOALKYLAMIDES CORRESPONDING TO THE GENERAL FORMULA:
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-21 | 1957-06-22 | 1957-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-21 | 1961-06-22 | 1961-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-21 | 1965-06-22 | 1965-12-22 | $7700.00 | Window Closed / Lapsed |