Patent US3725111A successfully refreshed from Google Patents.
US3725111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coating glass beads with a low cross-linked polymer
Assignee: F Hoffmann La Roche AG
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Filing: 1970-12-21
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Granted: 1973-04-03
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Expires: 1990-12-21
Abstract
No abstract record available.
Inventors
- 👤 C Horvath
- 👤 S Lipsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:37
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/28; C03C17/32; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31645
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |