US3420796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing powdered polyurethane resins
Assignee: Kuraray Co Ltd
•
Filing: 1965-09-07
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Granted: 1969-01-07
•
Expires: 1985-09-07
Abstract
No abstract record available.
Inventors
- 👤 Kanji Matsubayashi
- 👤 Takuo Kawaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:13
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/65; C08G18/6505; Y; Y10; Y10S; Y10S524/00; Y10S524/904; Y10S528/00; Y10S528/902; Y10S528/906
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) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |