Patent US2236271A successfully refreshed from Google Patents.
US2236271A
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Method of preparing sheet or film material
Assignee: MARBON Corp
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Filing: 1935-10-24
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Granted: 1941-03-25
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Expires: 1955-10-24
Abstract
No abstract record available.
Inventors
- 👤 Edouard M Kratz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:54
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/18; C08K; C08K5/00; C08K5/0008; C08K5/0016; C08K5/04; C08K5/13; C08K5/136; C08K5/16; C08K5/17; C08K5/36; C08K5/41; C08K5/42; C08L; C08L5/00; C08L89/00; C08L89/005; Y; Y10; Y10S; Y10S264/00; Y10S264/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-03-24 | 1944-09-23 | 1945-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-03-24 | 1948-09-23 | 1949-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-03-24 | 1952-09-23 | 1953-03-25 | $7700.00 | Window Closed / Lapsed |