Patent US3223542A successfully refreshed from Google Patents.
US3223542A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterproofing preparation
Assignee: Individual
•
Filing: 1965-04-06
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Granted: 1965-12-14
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Expires: 1985-04-06
Abstract
No abstract record available.
Inventors
- 👤 Sr Neville A Hammer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:31
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B28/10; C04B2111/00; C04B2111/00474; C04B2111/00482
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A COMPOSITION FOR THE WATERPROOF COATING OF MASONRY CONSISTING ESSENTIALLY OF 37 PARTS BY WEIGHT OF PORTLAND CEMENT, 8 PARTS BY WEIGHT OF SODIUM CHLORIDE, 1 PART BY WEIGHT OF SODIUM CARBONATE, AND 57.78 TO 59.4 PARTS BY WEIGHT OF CALCIUM OXIDE.
Claim 2
Dependent Claim
42 words
A COMPOSITION FOR THE WATERPROOF COATING OF MASONRY CONSISTING ESSENTIALLY OF 37 PARTS BY WEIGHT OF PORTLAND CEMENT, 8 PARTS BY WEIGHT OF SODIUM CHLORIDE, 1 PART BY WEIGHT OF SODIUM CARBONATE, AND 57.78 TO 59.4 PARTS BY WEIGHT OF CALCIUM OXIDE.
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) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |