US2708304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum coated articles
Assignee: BIRGIT WALLER
•
Filing: 1952-06-27
•
Granted: 1955-05-17
•
Expires: 1972-06-27
Abstract
No abstract record available.
Inventors
- 👤 Lundin Helen Marie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:14
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/04; C23C2/12; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/1275; Y10T428/12757; Y10T428/12764; Y10T428/12771; Y10T428/12861; Y10T428/12951; Y10T428/12958
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
AN ALUMINUM COATED FERROUS METAL ARTICLE, CHARACTERIZED IN THAT THE ALUMINUM LAYER IS BONDED TO THE FERROUS METAL BASE BY AN INTERMEDIATE INTERMETALLIC LAYER COMPOSED ESSENTIALLY OF 35% TO 65% BY WEIGHT EACH OF IRON AND ALUMINUM AND FROM 0.2% TO 2.5% BY WEIGHT OF ONE OF THE METALS ZIRCONIUM AND TITANIUM, THE PROPORTION OF SAID LAST-MENTIONED METAL TO ALUMINUM IN THE INTERMETALLIC LAYER BEING AT LEAST TWICE AS GREAT AS THE PROPORTION THEREOF TO ALUMINUM IN THE ALUMINUM LAYER.
Claim 2
Dependent Claim
80 words
AN ALUMINUM COATED FERROUS METAL ARTICLE, CHARACTERIZED IN THAT THE ALUMINUM LAYER IS BONDED TO THE FERROUS METAL BASE BY AN INTERMEDIATE INTERMETALLIC LAYER COMPOSED ESSENTIALLY OF 35% TO 65% BY WEIGHT EACH OF IRON AND ALUMINUM AND FROM 0.2% TO 2.5% BY WEIGHT OF ONE OF THE METALS ZIRCONIUM AND TITANIUM, THE PROPORTION OF SAID LAST-MENTIONED METAL TO ALUMINUM IN THE INTERMETALLIC LAYER BEING AT LEAST TWICE AS GREAT AS THE PROPORTION THEREOF TO ALUMINUM IN THE ALUMINUM LAYER.
References Cited (Backward Citations)
US1418303A
Cited
US1816388A
Cited
US1892819A
Cited
US1929252A
Cited
US2300400A
Cited
US2481962A
Cited
US2464836A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-16 | 1958-11-15 | 1959-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-16 | 1962-11-15 | 1963-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-16 | 1966-11-15 | 1967-05-17 | $7700.00 | Window Closed / Lapsed |