US3413249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coloring of polystyrene
Assignee: Shell USA Inc
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Filing: 1964-06-22
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Granted: 1968-11-26
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Expires: 1984-06-22
Abstract
No abstract record available.
Inventors
- 👤 Murray A Luftglass
- 👤 Jimmy E Mcclary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:07
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/22; C08J3/226; B; B01; B01F; B01F35/00; B01F35/71; B01F35/714; B01F35/7141; B01F35/71411; B01F35/714111; B29; B29B; B29B7/00; B29B7/002; B29B7/005; B29B7/30; B29B7/58; B29B7/60; B29B7/603; B29B7/80; B29B7/801; B29B7/84; B29B7/845; B29B7/88; B29C; B29C48/00; B29C48/25; B29C48/285; B29C48/29; B29C48/297; B29B7/34; B29B7/38; B29B7/40; B29B7/42; B29C48/03; B29K; B29K2023/00; B29K2023/10; B29K2023/12; B29K2025/00; B29K2033/00; B29K2033/04; B29K2033/12; B29K2105/00; B29K2105/0005; B29K2105/0032
Claims Analysis
Total Claims: 0
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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) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |