US2832745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous flameproofing compositions and cellulosic materials treated therewith
Assignee: Columbia Chemical Corp
•
Filing: 1956-08-31
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Granted: 1958-04-29
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Expires: 1976-08-31
Abstract
No abstract record available.
Inventors
- 👤 Hechenbleikner Ingenuin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:48
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/244; D06M13/282; D06M13/292; D06M13/288; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; D06M15/43; D06M15/433; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2672; Y10T442/268
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
A FLAMEPROOFING COMPOSITION COMPRISING A MIXTURE OF (A) A COMPOUND SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
16 words
A FLAMEPROOFING COMPOSITION COMPRISING A MIXTURE OF (A) A COMPOUND SELECTED FROM THE GROUP CONSISTING OF
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) | 1961-04-28 | 1961-10-28 | 1962-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-28 | 1965-10-28 | 1966-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-28 | 1969-10-28 | 1970-04-29 | $7700.00 | Window Closed / Lapsed |