US2768094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the production of protection layer on armature iron for moulding into concrete, especially light concrete or similar materials
Assignee: International Ytong Co AB
•
Filing: 1952-09-05
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Granted: 1956-10-23
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Expires: 1972-09-05
Abstract
No abstract record available.
Inventors
- 👤 Christer H Gemmel
- 👤 Nils Erik F Willen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:17
CPC Classifications
E; E04; E04C; E04C5/00; E04C5/01; E04C5/015; E04C5/017
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
THE METHOD OF PRODUCING A RUST-PROTECTION LAYER ON REINFORCING IRONS TO BE USED FOR REINFORCING CONCRETE WHICH CONSISTS OF THE STEPS OF COATING A BAR OF IRON WITH A LAYER OF PORTLAND CEMENT SLURRY, INTRODUCING THE COATED BAR INTO A MOIST ATMOSPHERE OF APPROXIMATELY 40* C. FOR APPROXIMATELY ONE HOUR SO AS TO PREHARDEN THE CEMENT, SUBSEQUENTLY SUBJECTING THE COATED BAR TO A FINAL HARDENING IN A MOIST SATURATED ATMOSPHERE OF APPROXIMATELY 70* TO 80* C. TEMPERATURE, AND THEN IMPREGNATING THE HARDENED CEMENT WITH A THIN NON-DRYING OIL.
Claim 2
Independent Claim
88 words
THE METHOD OF PRODUCING A RUST-PROTECTION LAYER ON REINFORCING IRONS TO BE USED FOR REINFORCING CONCRETE WHICH CONSISTS OF THE STEPS OF COATING A BAR OF IRON WITH A LAYER OF PORTLAND CEMENT SLURRY, INTRODUCING THE COATED BAR INTO A MOIST ATMOSPHERE OF APPROXIMATELY 40* C. FOR APPROXIMATELY ONE HOUR SO AS TO PREHARDEN THE CEMENT, SUBSEQUENTLY SUBJECTING THE COATED BAR TO A FINAL HARDENING IN A MOIST SATURATED ATMOSPHERE OF APPROXIMATELY 70* TO 80* C. TEMPERATURE, AND THEN IMPREGNATING THE HARDENED CEMENT WITH A THIN NON-DRYING OIL.
References Cited (Backward Citations)
US1446213A
Cited
GB333940A
Cited
AU2022734A
Cited
US2288633A
Cited
US2591625A
Cited
US2611945A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |