US3480570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of foaming polymeric particles containing a foaming agent
Assignee: Monsanto Chemicals Ltd
•
Filing: 1966-09-20
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Granted: 1969-11-25
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Expires: 1986-09-20
Abstract
No abstract record available.
Inventors
- 👤 Brinley Roberts
- 👤 Robert James Stephenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:35
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/22; C08J9/224; D; D01; D01D; D01D5/00; D01D5/24; D01D5/247; D01D5/42; D01D5/423; C08J2325/00; C08J2325/02; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2973; Y10T428/2975
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) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |