US3822142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Etching primer for concrete floor surfaces containing sulfuric acid
Assignee: Tennant Co
•
Filing: 1973-01-10
•
Granted: 1974-07-02
•
Expires: 1993-01-10
Abstract
Abstract A LIQUID CONDITIONING COMPOSITION FOR SET CEMENTITIOUS SURFACES WHICH FORMS A COHERENT AND STABLE MASS FIXED TO THE CENENTITIOUS SURFACE, AND MAY BE IN THE FORM OF AN ADHERENT COATING FILM IN BONDED RELATIONSHIP THERETO AND WHICH INCLUDES AN AQUEOUS DISPERSION OF SULFURIC ACID, A SURFACTANT WHICH IS PREFERABLY IN THE FORM OF A NONIONIC AND/OR CATIONIC EMULSIFIER, AND AN AIR CURABLE ACID STABLE MISCIBLE RESINOUS BINDER, ALONG WITH COMPARTIBLE DISPERSANTS. THE FORMULATION MAY BE UTILIZED FOR APPLICATION TO CONCRETE FLOOR SURFACES AND PARTICULARLY IN A SINGLE OPERATION WHICH PROVIDES BOTH ETCHING AND FORMATION OF A CONDITIONING COAT.
Inventors
- 👤 E Arntson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:30
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/53; C04B41/5338
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-01 | 1977-12-31 | 1978-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-01 | 1981-12-31 | 1982-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-01 | 1985-12-31 | 1986-07-02 | $7700.00 | Window Closed / Lapsed |