US2442068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfur-chloride treated butyl rubber as tie-gum
Assignee: Standard Oil Development Co
•
Filing: 1942-05-26
•
Granted: 1948-05-25
•
Expires: 1962-05-26
Abstract
No abstract record available.
Inventors
- 👤 Ralph F Wolf
- 👤 William J Sparks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:01
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/34; C08F2800/00; C08F2800/20; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31826; Y10T428/31833; Y10T428/31837; Y10T428/31855; Y10T428/31931; Y10T428/31935
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1110451A
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US1385805A
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US1352164A
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US1979947A
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GB513521A
Cited
US2213423A
Cited
US2228212A
Cited
US2259347A
Cited
US2278802A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-25 | 1951-11-24 | 1952-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-25 | 1955-11-24 | 1956-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-25 | 1959-11-24 | 1960-05-25 | $7700.00 | Window Closed / Lapsed |