US2706310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for finishing organic thermoplastic sheeting
Assignee: Celanese Corp
•
Filing: 1950-12-14
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Granted: 1955-04-19
•
Expires: 1970-12-14
Abstract
No abstract record available.
Inventors
- 👤 Eckler Leopold
- 👤 William P Moeller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:43
CPC Classifications
B; B29; B29C; B29C59/00; B29C59/02; B29C59/04; B29K; B29K2001/00; B29K2001/08; B29K2001/12; B29K2995/00; B29K2995/0037; B29K2995/0072; B29K2995/0073; Y; Y10; Y10S; Y10S264/00; Y10S264/68
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
IN A PROCESS FOR THE PRODUCTION OF ORGANIC ACID ESTER OF CELLULOSE SHEETING, THE STEP WHICH COMPRISES PRESSING AN UNHEATED ORGANIC ACID ESTER OF CELLULOSE SHEETING HAVING SURFACE BLEMISHES BETWEEN UNHEATED ROTATABLE SURFACES AT A PRESSURE OF AT LEAST ABOUT 2000 POUNDS PER SQUARE INCH WHEREBY THE APPEARANCE AND UNIFORMITY OF GAGE OF SAID SHEETING ARE IMPROVED.
Claim 2
Dependent Claim
57 words
IN A PROCESS FOR THE PRODUCTION OF ORGANIC ACID ESTER OF CELLULOSE SHEETING, THE STEP WHICH COMPRISES PRESSING AN UNHEATED ORGANIC ACID ESTER OF CELLULOSE SHEETING HAVING SURFACE BLEMISHES BETWEEN UNHEATED ROTATABLE SURFACES AT A PRESSURE OF AT LEAST ABOUT 2000 POUNDS PER SQUARE INCH WHEREBY THE APPEARANCE AND UNIFORMITY OF GAGE OF SAID SHEETING ARE IMPROVED.
References Cited (Backward Citations)
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Cited
US2219700A
Cited
US2177659A
Cited
US2244208A
Cited
US2262989A
Cited
US2304886A
Cited
US2346210A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-04-18 | 1958-10-18 | 1959-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-18 | 1962-10-18 | 1963-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-18 | 1966-10-18 | 1967-04-19 | $7700.00 | Window Closed / Lapsed |