US2993264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective coating for molybdenum
Assignee: General Electric Co
•
Filing: 1955-12-23
•
Granted: 1961-07-25
•
Expires: 1975-12-23
Abstract
No abstract record available.
Inventors
- 👤 Herbert E Grenoble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:27
CPC Classifications
C; C23; C23C; C23C28/00; C23C28/02; C23C28/023; C25; C25D; C25D5/00; C25D5/10; C25D5/12; C25D5/14; C25D5/60; C25D5/615; C25D5/617; Y; Y10; Y10S; Y10S205/00; Y10S205/917; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S428/9335; Y10S428/934; Y10S428/935; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12632; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/12833; Y10T428/12847; Y10T428/12854
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A COMPOSITE ARTICLE INCLUDING A BODY CONSISTING SUBSTANTIALLY OF MOLYBDENUM AND A MULTIPLE LAYER COATING SUBSTANTIALLY COVERING THE SURFACE OF SAID BODY TO PROVIDE IMPROVED RESISTANCE AGAINST HIGH TEMPERATURE OXIDATION OF SAID BODY WHEN IT IS SUBJECTED TO CYCLIC STRESSES, SAID MULTIPLE LAYER COATING COMPRISING A FIRST CHROMIUM LAYER DEPOSITED ON SAID BODY AS A CONTINUOUS FILM COVERING SUBSTANTIALLY THE ENTIRE SURFACE THEREOF, AND A PLURALITY OF NICKEL LAYERS OF FROM 0.0006 TO 0.0008 INCH THICK ALTERNATING WITH A PLURALITY OF CHROMIUM LAYERS OF FROM 0.0002 TO 0.0003 INCH THICK, SAID LAYERS BEING PRESENT AS CONTINUOUS FILMS COVERING SAID FIRST CHROMIUM LAYER AND ENDING IN AN OUTERMOST LAYER OF CHROMIUM, ADJOINING NICKEL AND CHROMIUM LAYERS FORMING ALLOYS AT THE INTERFACES THEREBETWEEN WHICH IMPROVE THE PROTECTIVE PROPERTIES OF SAID MULTIPLE LAYER COATING.
Claim 2
Dependent Claim
131 words
A COMPOSITE ARTICLE INCLUDING A BODY CONSISTING SUBSTANTIALLY OF MOLYBDENUM AND A MULTIPLE LAYER COATING SUBSTANTIALLY COVERING THE SURFACE OF SAID BODY TO PROVIDE IMPROVED RESISTANCE AGAINST HIGH TEMPERATURE OXIDATION OF SAID BODY WHEN IT IS SUBJECTED TO CYCLIC STRESSES, SAID MULTIPLE LAYER COATING COMPRISING A FIRST CHROMIUM LAYER DEPOSITED ON SAID BODY AS A CONTINUOUS FILM COVERING SUBSTANTIALLY THE ENTIRE SURFACE THEREOF, AND A PLURALITY OF NICKEL LAYERS OF FROM 0.0006 TO 0.0008 INCH THICK ALTERNATING WITH A PLURALITY OF CHROMIUM LAYERS OF FROM 0.0002 TO 0.0003 INCH THICK, SAID LAYERS BEING PRESENT AS CONTINUOUS FILMS COVERING SAID FIRST CHROMIUM LAYER AND ENDING IN AN OUTERMOST LAYER OF CHROMIUM, ADJOINING NICKEL AND CHROMIUM LAYERS FORMING ALLOYS AT THE INTERFACES THEREBETWEEN WHICH IMPROVE THE PROTECTIVE PROPERTIES OF SAID MULTIPLE LAYER COATING.
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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) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |