US3309218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible cellulosic articles having ultra-violet light shielding properties and method of producing them
Assignee: FMC Corp
•
Filing: 1962-12-28
•
Granted: 1967-03-14
•
Expires: 1982-12-28
Abstract
No abstract record available.
Inventors
- 👤 Jr Wilbur T Brader
- 👤 Thomas E Bradley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:50
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/042; C08J7/0423; C08J7/043; C08J2301/00; Y; Y10; Y10S; Y10S428/00; Y10S428/918; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31884; Y10T428/31891
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A WRAPPING MATERIAL FOR AN ULTRA-VIOLET LIGHT SENSITIVE ARTICLE COMPRISING A CLEAR, NON-FIBROUS REGENERATED CELLULOSE SHEET UNIFORMLY IMPREGNATED WITH FERRIC HYDROXIDE IN AN AMOUNT SUFFICIENT TO IMPROVE THE ULTRAVIOLET LIGHT SHIELDING PROPERTIES OF SAID SHEET.
Claim 2
Dependent Claim
35 words
A WRAPPING MATERIAL FOR AN ULTRA-VIOLET LIGHT SENSITIVE ARTICLE COMPRISING A CLEAR, NON-FIBROUS REGENERATED CELLULOSE SHEET UNIFORMLY IMPREGNATED WITH FERRIC HYDROXIDE IN AN AMOUNT SUFFICIENT TO IMPROVE THE ULTRAVIOLET LIGHT SHIELDING PROPERTIES OF SAID SHEET.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |