US2861012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fireproof tar composition
Assignee: Individual
•
Filing: 1955-06-27
•
Granted: 1958-11-18
•
Expires: 1975-06-27
Abstract
No abstract record available.
Inventors
- 👤 Lowell Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:18
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/34; C; C08; C08L; C08L95/00; D21H19/00; D21H19/10; D21H5/00; D21H5/0002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
A FIRE RESISTANT AND WATER REPELLENT COMPOSITION OF MATTER COMPRISING A MAJOR AMOUNT OF TAR, SODIUM SILICATE, CARBAMIDE PHOSPHORIC ACID, AND AMMONIUM SULFATE.
Claim 2
Dependent Claim
23 words
A FIRE RESISTANT AND WATER REPELLENT COMPOSITION OF MATTER COMPRISING A MAJOR AMOUNT OF TAR, SODIUM SILICATE, CARBAMIDE PHOSPHORIC ACID, AND AMMONIUM SULFATE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |