US2536375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grouting material
Assignee: Armstrong World Industries Inc
•
Filing: 1948-12-27
•
Granted: 1951-01-02
•
Expires: 1968-12-27
Abstract
No abstract record available.
Inventors
- 👤 George W Koehn
- 👤 Augustine P Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:22
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/14; C04B28/16; B; B44; B44C; B44C5/00; B44C5/04; B44C5/0469; C08; C08K; C08K3/00; C08K3/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A COMPOSITION OF MATTER SUITABLE FOR USE AS A GROUTING MATERIAL COMPRISING A MIXTURE CONTAINING ABOUT 50% TO ABOUT 73% POLYVINYL ACETATE AND ABOUT 50% TO ABOUT 30% SUBSTANTIALLY ANHYDROUS CALCIUM SULFATE SUSPENDED IN AN AQUEOUS MEDIUM.
Claim 2
Dependent Claim
37 words
A COMPOSITION OF MATTER SUITABLE FOR USE AS A GROUTING MATERIAL COMPRISING A MIXTURE CONTAINING ABOUT 50% TO ABOUT 73% POLYVINYL ACETATE AND ABOUT 50% TO ABOUT 30% SUBSTANTIALLY ANHYDROUS CALCIUM SULFATE SUSPENDED IN AN AQUEOUS MEDIUM.
References Cited (Backward Citations)
US2152670A
Cited
GB562859A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |