Patent US2173427A 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 05:17
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)
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Cited
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Cited
US2267200A
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US2383074A
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Cited
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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 |