US3326992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polycyclic hydrocarbon composition
Assignee: Shell USA Inc
•
Filing: 1965-06-04
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Granted: 1967-06-20
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Expires: 1985-06-04
Abstract
No abstract record available.
Inventors
- 👤 Ernst W Muller
- 👤 Norman J H Small
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:27
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/04; C07; C07C; C07C13/00; C07C13/28; C07C13/32; C07C13/62; C07C13/64; C07C2/00; C07C2/02; C07C2/42; C07C5/00; C07C5/02; C07C5/03; C07C5/05; C07C2531/00; C07C2531/16; C07C2531/22; C07C2603/00; C07C2603/56; C07C2603/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE626407A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-19 | 1970-12-19 | 1971-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-19 | 1974-12-19 | 1975-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-19 | 1978-12-19 | 1979-06-20 | $7700.00 | Window Closed / Lapsed |