US1534729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of colloidal substances in the form of small balls or grains
Assignee: Individual
•
Filing: 1924-03-13
•
Granted: 1925-04-21
•
Expires: 1944-03-13
Abstract
No abstract record available.
Inventors
- 👤 Obersohn Albert
- 👤 Wachtel Wilhelm
- 👤 Askenasy Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:27
CPC Classifications
C; C09; C09H; C09H9/00; C09H9/04; Y; Y10; Y10S; Y10S264/00; Y10S264/37
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) | 1928-04-20 | 1928-10-20 | 1929-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-04-20 | 1932-10-20 | 1933-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-04-20 | 1936-10-20 | 1937-04-21 | $7700.00 | Window Closed / Lapsed |