US3383189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prevention of white rust on galvanized sheets
Assignee: T Sendzimir Inc
•
Filing: 1964-04-16
•
Granted: 1968-05-14
•
Expires: 1984-04-16
Abstract
No abstract record available.
Inventors
- 👤 Sendzimir Tadeusz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:40
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/04; C23C2/06; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/936; Y10S428/939; Y10S428/941; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12785; Y10T428/12792
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
86 words
THE METHOD OF APPLYING TIGHTLY ADHERENT HOT DIP ZINC COATINGS ONTO A CONTINUOUSLY RUNNING LENGTH OF FERROUS MATERIAL WHICH COMPRISES IMMERSING SAID MATERIAL IN A MOLTEN ZINC BATH CONTAINING SUFFICIENT ALUMINUM UP TO APPROXIMATELY 0.2%, TO FORM A CONTROLLED VERY THIN PLIABLE ZINC-IRON ALLOY LAYER EXHIBITING NON-BRITTLE CHARACTERISTICS, SUBSEQUENTLY WIPING OFF ALL THE MOLTEN ZINC AND ALLUMINUM WHICH IS NOT ALLOYED WITH IRON, AND IMMEDIATELY AFTERWARDS PASSING SAID MATERIAL WITH ITS NEWLY-FORMED CONTROLLED ZINC-IRON ALLOY LAYER THROUGH A MOLTEN ZINC BATH SUBSTANTIALLY FREE OF ANY ALUMINUM.
Claim 2
Independent Claim
86 words
THE METHOD OF APPLYING TIGHTLY ADHERENT HOT DIP ZINC COATINGS ONTO A CONTINUOUSLY RUNNING LENGTH OF FERROUS MATERIAL WHICH COMPRISES IMMERSING SAID MATERIAL IN A MOLTEN ZINC BATH CONTAINING SUFFICIENT ALUMINUM UP TO APPROXIMATELY 0.2%, TO FORM A CONTROLLED VERY THIN PLIABLE ZINC-IRON ALLOY LAYER EXHIBITING NON-BRITTLE CHARACTERISTICS, SUBSEQUENTLY WIPING OFF ALL THE MOLTEN ZINC AND ALLUMINUM WHICH IS NOT ALLOYED WITH IRON, AND IMMEDIATELY AFTERWARDS PASSING SAID MATERIAL WITH ITS NEWLY-FORMED CONTROLLED ZINC-IRON ALLOY LAYER THROUGH A MOLTEN ZINC BATH SUBSTANTIALLY FREE OF ANY ALUMINUM.
Claim 3
Dependent Claim
17 words
A COATED LENGTH OF FERROUS MATERIAL PRODUCED IN ACCORDANCE WITH THE METHOD SET FORTH IN CLAIM 1.
References Cited (Backward Citations)
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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) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |