US2676114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing graded coatings
Assignee: Libbey Owens Ford Glass Co
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Filing: 1951-06-08
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Granted: 1954-04-20
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Expires: 1971-06-08
Abstract
No abstract record available.
Inventors
- 👤 Dwight W Barkley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:53
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/04; C23C14/042; C23C14/044
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
THE METHOD OF PRODUCING A GRADED COATING UPON A SUPPORT BODY BY THERMAL EVAPORATION, POSITION TO BE COATED IN A VACUUM CHAMBER, PROVIDING A LINEAR SOURCE OF EVAPORATION IN SAID CHAMBER, PROJECTING A HYPOTHETICAL DIAGONAL LINE BETWEEN ONE END OF THE EVAPORATION SOURCE AND THE OPPOSITE END OF THE AREA ON THE SUPPORT BODY TO BE COATED WITH THE GRADING, PROJECTING A SECOND HYPOTHETICAL DIAGONAL LINE BETWEEN THE OTHER END OF THE EVAPORATION SOURCE AND THE OPPOSITE END OF THE AREA ON THE SUPPORT BODY TO BE COATED WITH THE GRADING AND WHICH SECOND LINE INTERSECTS THE FIRST LINE AT A POINT BETWEEN THE SUPPORT BODY AND EVAPORATION SOURCE, PLACING A SHIELD BETWEEN SAID SUPPORT BODY AND EVAPORATION SOURCE AT THE INTERSECTION OF THE TWO HYPOTHETICAL DIAGONAL LINES, AND EVAPORATING COATING MATERIAL FROM THE EVAPORATION SOURCE AS SAID SHIELD IS HELD STATIONARILY AT SAID INTERSECTION TO PRODUCE A GRADED COATING.
Claim 2
Independent Claim
150 words
THE METHOD OF PRODUCING A GRADED COATING UPON A SUPPORT BODY BY THERMAL EVAPORATION, POSITION TO BE COATED IN A VACUUM CHAMBER, PROVIDING A LINEAR SOURCE OF EVAPORATION IN SAID CHAMBER, PROJECTING A HYPOTHETICAL DIAGONAL LINE BETWEEN ONE END OF THE EVAPORATION SOURCE AND THE OPPOSITE END OF THE AREA ON THE SUPPORT BODY TO BE COATED WITH THE GRADING, PROJECTING A SECOND HYPOTHETICAL DIAGONAL LINE BETWEEN THE OTHER END OF THE EVAPORATION SOURCE AND THE OPPOSITE END OF THE AREA ON THE SUPPORT BODY TO BE COATED WITH THE GRADING AND WHICH SECOND LINE INTERSECTS THE FIRST LINE AT A POINT BETWEEN THE SUPPORT BODY AND EVAPORATION SOURCE, PLACING A SHIELD BETWEEN SAID SUPPORT BODY AND EVAPORATION SOURCE AT THE INTERSECTION OF THE TWO HYPOTHETICAL DIAGONAL LINES, AND EVAPORATING COATING MATERIAL FROM THE EVAPORATION SOURCE AS SAID SHIELD IS HELD STATIONARILY AT SAID INTERSECTION TO PRODUCE A GRADED 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) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |