US2830643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Profile corrector
Assignee: Dow Chemical Co
•
Filing: 1954-04-22
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Granted: 1958-04-15
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Expires: 1974-04-22
Abstract
No abstract record available.
Inventors
- 👤 Clare S Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:21
CPC Classifications
B; B21; B21C; B21C35/00; B21C35/02; B21C35/03; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5198
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
APPARATUS FOR CORRECTING THE PROFILE OF AN EXTRUDED SECTION OF A LIGHT METAL, SAID APPARATUS COMPRISING A METAL BACKING PLATE HAVING AN APERTURE BEING OF THE THICKNESS DIMENSION THEREOF, SAID APERTURE BEING OF SUFFICIENT SIZE TO PERMIT THE FREE PASSAGE THERETHROUGH OF AN EXTRUDED SECTION, A PLURALITY OF GRAPHITE SEGMENTS
Claim 2
Dependent Claim
50 words
APPARATUS FOR CORRECTING THE PROFILE OF AN EXTRUDED SECTION OF A LIGHT METAL, SAID APPARATUS COMPRISING A METAL BACKING PLATE HAVING AN APERTURE BEING OF THE THICKNESS DIMENSION THEREOF, SAID APERTURE BEING OF SUFFICIENT SIZE TO PERMIT THE FREE PASSAGE THERETHROUGH OF AN EXTRUDED SECTION, A PLURALITY OF GRAPHITE SEGMENTS
References Cited (Backward Citations)
US831184A
Cited
US1308945A
Cited
US1741815A
Cited
US2029800A
Cited
US2262716A
Cited
US2359453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |