Patent US3371069A successfully refreshed from Google Patents.
US3371069A
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Filaments and surgical sutures of polyl-glutamic acid partly esterified with lower alkanols and process therefor
Assignee: Ajinomoto Co Inc
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Filing: 1964-03-17
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Granted: 1968-02-27
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Expires: 1984-03-17
Abstract
No abstract record available.
Inventors
- 👤 Takashi Miyamae
- 👤 Shigeo Mori
- 👤 Yoshifumi Takeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:31
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/58; D01F6/68; A; A61; A61L; A61L17/00; A61L17/06; C; C07; C07K; C07K1/00; C07K1/006; C08; C08G; C08G69/00; C08G69/02; C08G69/08; C08G69/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A FILAMENT OF A MACROMOLECULAR COPOLYPEPTIDE CONSISTING ESSENTIALLY OF THE COPOLYMERIZATION PRODUCT OF (1) L-GLUTAMIC ACID AND (2) AT LEAST ONE OTHER AMINO ACID SELECTED FROM THE GROUP CONSISTING OF L-VALINE AND L-ALANINE, WITH THE PROVISO THAT FROM 7 TO 70 PERCENT OF THE CARBOXYL HYDROGEN IN THE GLUTAMIC ACID MOIETY HAVE BEEN REPLACED BY LOWER ALKYL RADICALS, THE PERCENTAGE OF SAID LOWER ALKYL RADICALS BEING SUBSTANTIALLY HIGHER AT THE SURFACE OF SAID FILAMENT THAN IN THE INTERIOR THEREOF.
Claim 2
Dependent Claim
79 words
A FILAMENT OF A MACROMOLECULAR COPOLYPEPTIDE CONSISTING ESSENTIALLY OF THE COPOLYMERIZATION PRODUCT OF (1) L-GLUTAMIC ACID AND (2) AT LEAST ONE OTHER AMINO ACID SELECTED FROM THE GROUP CONSISTING OF L-VALINE AND L-ALANINE, WITH THE PROVISO THAT FROM 7 TO 70 PERCENT OF THE CARBOXYL HYDROGEN IN THE GLUTAMIC ACID MOIETY HAVE BEEN REPLACED BY LOWER ALKYL RADICALS, THE PERCENTAGE OF SAID LOWER ALKYL RADICALS BEING SUBSTANTIALLY HIGHER AT THE SURFACE OF SAID FILAMENT THAN IN THE INTERIOR THEREOF.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |