Patent US4409138A successfully refreshed from Google Patents.
US4409138A
Expired / Lapsed
US
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Non-absorbable compounds of mucolytic activity, the process for their preparation, and therapeutic compositions which contain them as active principle
Assignee: Texcontor
•
Filing: 1980-09-05
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Granted: 1983-10-11
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Expires: 2000-09-05
Abstract
Abstract Marcromolecular compounds of mucolytic activity, non-absorbable by tissues, free from side-effects, compatible with antibiotics, and constituted by carbohydrates as their basic structure, to which enzymes and sulphydryl groups are bonded by suitable aliphatic chains.
Inventors
- 👤 Javier E. Maltz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:45
CPC Classifications
C; C12; C12N; C12N11/00; C12N11/02; C12N11/10; A; A61; A61K; A61K38/00; A61K38/16; A61K38/43; A61K38/46; A61K38/465; A61K47/00; A61K47/50; A61K47/51; A61K47/56; A61K47/58; A61K47/62; A61K47/64; A61P; A61P11/00; A61P11/10; A61P29/00; C12N11/08; C12N11/082; C12N11/087; C12Y; C12Y301/00; C12Y301/21; C12Y301/21001
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
19 words
A compound having mucolytic activity while not being absorbed by tissues of the formula ##STR13## wherein n+m is 500.
Claim 2
Dependent Claim
19 words
A compound having mucolytic activity while not being absorbed by tissues of the formula ##STR13## wherein n+m is 500.
Claim 3
Dependent Claim
15 words
A compound having mucolytic activity while not being absorbed by tissues of the formula ##STR14##
Claim 4
Dependent Claim
15 words
A compound having mucolytic activity while not being absorbed by tissues of the formula ##STR14##
References Cited (Backward Citations)
US4004979A
Cited
US3639213A
Cited
US3683069A
Cited
GB1390542A
Cited
US4185090A
Cited
US4259233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-10 | 1987-04-11 | 1987-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-10 | 1991-04-11 | 1991-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-10 | 1995-04-11 | 1995-10-11 | $7700.00 | Window Closed / Lapsed |