US2438318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Increasing adhesion of bituminous materials to mineral aggregate
Assignee: Nostrip Inc
•
Filing: 1942-09-29
•
Granted: 1948-03-23
•
Expires: 1962-09-29
Abstract
No abstract record available.
Inventors
- 👤 James M Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:59
CPC Classifications
C; C08; C08L; C08L95/00; Y; Y10; Y10S; Y10S106/00; Y10S106/07
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1947951A
Cited
US2191295A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-23 | 1951-09-22 | 1952-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-23 | 1955-09-22 | 1956-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-23 | 1959-09-22 | 1960-03-23 | $7700.00 | Window Closed / Lapsed |