US3380940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and material for the preparation of an aqueous solution for neutralizing andpre-gluing building surfaces
Assignee: Kalle GmbH and Co KG
•
Filing: 1965-09-13
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Granted: 1968-04-30
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Expires: 1985-09-13
Abstract
No abstract record available.
Inventors
- 👤 Hansi Werner
- 👤 Gramm Eduard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:13
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B26/00; C04B26/02; C04B26/28; C04B26/285; C04B41/45; C04B41/4505; C04B41/50; C04B41/5007; C04B41/5014; C04B41/60; C04B41/61; C04B41/65
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A PROCESS FOR THE PREPARATION OF A SOLUTION FOR NEUTRALIZING AND PRE-GLUING SURFACES OF STRUCTURES MADE FROM ALKALINE BUILDING MATERIALS WHICH COMPRISES DISSOLVING IN WATER A DRY POWDERED MIXTURE CONSISTING ESSENTIALLY OF A SALT OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, CHROMIUM AND ZINC, WHICH SALT IN AQUEOUS SOLUTION HAS AN ACID REACTION, AND HYDROXYETHYL CELLULOSE, HAVING A MOLAR DEGREE OF SUBSTITUTION OF 1 TO 5, THE SALT BEING PRESENT IN A QUANTITY BY WEIGHT WHICH IS 3 TO 6 TIMES THE WEIGHT OF THE HYDROXYETHYL CELLULOSE.
Claim 2
Dependent Claim
90 words
A PROCESS FOR THE PREPARATION OF A SOLUTION FOR NEUTRALIZING AND PRE-GLUING SURFACES OF STRUCTURES MADE FROM ALKALINE BUILDING MATERIALS WHICH COMPRISES DISSOLVING IN WATER A DRY POWDERED MIXTURE CONSISTING ESSENTIALLY OF A SALT OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, CHROMIUM AND ZINC, WHICH SALT IN AQUEOUS SOLUTION HAS AN ACID REACTION, AND HYDROXYETHYL CELLULOSE, HAVING A MOLAR DEGREE OF SUBSTITUTION OF 1 TO 5, THE SALT BEING PRESENT IN A QUANTITY BY WEIGHT WHICH IS 3 TO 6 TIMES THE WEIGHT OF THE HYDROXYETHYL CELLULOSE.
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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) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |