Patent US2580461A successfully refreshed from Google Patents.
US2580461A
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Ultraviolet-radiation impervious wrapping material
Assignee: Sulphite Products Corp
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Filing: 1947-08-27
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Granted: 1952-01-01
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Expires: 1967-08-27
Abstract
No abstract record available.
Inventors
- 👤 Irwin A Pearl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:43
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/143; C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/134; C08K5/1345; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A WRAPPING MATERIAL SUBSTANTIALLY IMPERVIOUS TO ULTRAVIOLET RADIATIONS IN THE RANGE OF ABOUT 2400 TO 3100 A., COMPRISING A BASE SHEET NORMALLY PERVIOUS TO ULTRAVIOLET RADIATIONS HAVING INCORPORATED THEREWITH A SUFFICIENT AMOUNT OF AN ESTER OF 3-METHOXY-4-HYDROXY-BENZOIC ACID TO RENDER SAID BASE SHEET IMPERVIOUS TO ULTRAVIOLET RADITIONS IN SAID RANGE.
Claim 2
Dependent Claim
50 words
A WRAPPING MATERIAL SUBSTANTIALLY IMPERVIOUS TO ULTRAVIOLET RADIATIONS IN THE RANGE OF ABOUT 2400 TO 3100 A., COMPRISING A BASE SHEET NORMALLY PERVIOUS TO ULTRAVIOLET RADIATIONS HAVING INCORPORATED THEREWITH A SUFFICIENT AMOUNT OF AN ESTER OF 3-METHOXY-4-HYDROXY-BENZOIC ACID TO RENDER SAID BASE SHEET IMPERVIOUS TO ULTRAVIOLET RADITIONS IN SAID RANGE.
References Cited (Backward Citations)
US1920483A
Cited
GB474666A
Cited
US2267200A
Cited
US2383074A
Cited
US2375138A
Cited
US2380043A
Cited
US2418695A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |