Patent US2580131A successfully refreshed from Google Patents.
US2580131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for coating a lithographic plate
Assignee: Chandler and Price Co
•
Filing: 1947-02-25
•
Granted: 1951-12-25
•
Expires: 1967-02-25
Abstract
No abstract record available.
Inventors
- 👤 George S Rowell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:22
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/16; G03F7/162
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
99 words
THE METHOD OF COATING A LITHOGRAPHIC PLATE TO FORM A COATING OF SUBSTANTIALLY UNIFORM THICKNESS WHICH COMPRISES RAPIDLY REVOLVING SAID PLATE IN A HORIZONTAL PLANE ABOUT AN AXIS GENERALLY CENTRALLY THEREOF, POURING A COATING LIQUID CENTRALLY ON SAID REVOLVING PLATE WHEREBY SAID LIQUID WILL BE SPREAD UNDER INFLUENCE OF CENTRIFUGAL FORCE, CAUSING A CURRENT OF AIR TO FLOW UNIFORMLY RADIALLY INWARDLY OVER SUCH REVOLVING PLATE FROM ABOUT THE ENTIRE PERIPHERY OF THE LATTER DURING APPLICATION OF SAID LIQUID TO DRY SAID LIQUID, AND REMOVING SAID AIR FROM THE CENTER SURFACE OF SAID PLATE UPWARDLY ALONG THE AXIS OF ROTATION.
References Cited (Backward Citations)
US1059057A
Cited
US1253990A
Cited
US1343887A
Cited
US1592608A
Cited
US2021485A
Cited
US2234608A
Cited
DE625958C
Cited
US2084642A
Cited
US2074171A
Cited
US2257373A
Cited
US2387349A
Cited
US2386591A
Cited
US2455761A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |