US3033640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Incorporation of an organic basic compound into cellulose acetate materials
Assignee: Saul and Co
•
Filing: 1955-06-16
•
Granted: 1962-05-08
•
Expires: 1975-06-16
Abstract
No abstract record available.
Inventors
- 👤 Hofer Kurt
- 👤 Hemmi Hans Martin
- 👤 Peter Albin
- 👤 Lutz Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:48
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/64; D06P1/642; C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; D06P1/645; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/921
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
MATERIALS SELECTED FROM THE GROUP CONSISTING OF CELLULOSE ESTERS, POLYESTERS AND POLYAMIDES AND CONTAINING AN ORGANIC BASE OF THE FORMULA
Claim 2
Dependent Claim
20 words
MATERIALS SELECTED FROM THE GROUP CONSISTING OF CELLULOSE ESTERS, POLYESTERS AND POLYAMIDES AND CONTAINING AN ORGANIC BASE OF THE FORMULA
References Cited (Backward Citations)
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Cited
GB613818A
Cited
US2546167A
Cited
US2619502A
Cited
US2691679A
Cited
US2706142A
Cited
US2688639A
Cited
US2666790A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |