US2227163A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous emoulsions of polymerization products and a process of preparaing them
Assignee: GAF Chemicals Corp
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Filing: 1935-11-13
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Granted: 1940-12-31
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Expires: 1955-11-13
Abstract
No abstract record available.
Inventors
- 👤 Starck Werner
- 👤 Freudenberger Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:07
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/12; C08F2/16; C08F2/22; C08F2/24; C08F2/30; C08F261/00; C08F261/02; C08F261/04; C09; C09K; C09K23/00; C09K23/38
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) | 1943-12-31 | 1944-07-01 | 1944-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-12-31 | 1948-07-01 | 1948-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-12-31 | 1952-07-01 | 1952-12-31 | $7700.00 | Window Closed / Lapsed |