US2866783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glutamic and aspartic acid polypeptide polymers as plasma volume extenders
Assignee: Individual
•
Filing: 1956-07-05
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Granted: 1958-12-30
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Expires: 1976-07-05
Abstract
No abstract record available.
Inventors
- 👤 Bovarnick Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:05
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/08; C08G69/10; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/832; Y10S435/839
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
AS A NEW CLASS OF COMPOUNDS, POOLYPEPTIDE POLYMERS HAVING BACKBONE CHAINS OF ABOUT 12,000 TO 67,000 MOLECULAR WEIGHT WHICH ARE CHAINS OF CARBOXYLIC ACIDS OF THE CLASS CONSISTING OF POLYGLUTAMIC AND POLYASPARTIC ACIDS ONTO WHICH ARE ATTACHED SIDE CHAINS OF ABOUT 2100 TO 3400 MOLECULAR WEIGHT, OF THE CLASS CONSISTING OF PEPTIDES OF POLYGLUTAMIC AND POLYASPARTIC ACIDS, THE SIDE CHAINS BEING ATTACHED TO THE BACKBONE CHAINS BY MEANS OF PEPTIDE LINKAGES BETWEEN THE FREE CARBOXYL GROUPS OF THE BACKBONE POLYCARBOXYLIC ACID CHAINS AND THE TERMINAL AMINO GROUPS OF THE POLYCARBOXYLIC ACID SIDE CHAINS.
Claim 2
Dependent Claim
93 words
AS A NEW CLASS OF COMPOUNDS, POOLYPEPTIDE POLYMERS HAVING BACKBONE CHAINS OF ABOUT 12,000 TO 67,000 MOLECULAR WEIGHT WHICH ARE CHAINS OF CARBOXYLIC ACIDS OF THE CLASS CONSISTING OF POLYGLUTAMIC AND POLYASPARTIC ACIDS ONTO WHICH ARE ATTACHED SIDE CHAINS OF ABOUT 2100 TO 3400 MOLECULAR WEIGHT, OF THE CLASS CONSISTING OF PEPTIDES OF POLYGLUTAMIC AND POLYASPARTIC ACIDS, THE SIDE CHAINS BEING ATTACHED TO THE BACKBONE CHAINS BY MEANS OF PEPTIDE LINKAGES BETWEEN THE FREE CARBOXYL GROUPS OF THE BACKBONE POLYCARBOXYLIC ACID CHAINS AND THE TERMINAL AMINO GROUPS OF THE POLYCARBOXYLIC ACID SIDE CHAINS.
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) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |