US2854377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Effervescent compositions containing a surface active agent
Assignee: Individual
•
Filing: 1955-09-22
•
Granted: 1958-09-30
•
Expires: 1975-09-22
Abstract
No abstract record available.
Inventors
- 👤 Nathaniel M Elias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:55
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0002; A61K9/0007; Y; Y10; Y10S; Y10S424/00; Y10S424/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A NON-TOXIC PHARMACEUTICAL COMPOSITION WHICH EFFERVESCES ON CONTACT WITH MOISTURE WHICH COMPRISES A SOLID NON-TOXIC POLYBASIC ACIDIC MATERIAL HAVING AT LEAST ONE ACIDIC HYDROGEN ATOM, AND ALKALI METAL SALT OF CARBONIC ACID, AND A SURFACE ACTIVE AGENT, SAID POLYBASIC ACID MATERIAL AND SAID ALKALI METAL SALT CONSTITUTING TOGETHER A MAJOR PORTION OF SAID COMPOSITTION, SAID POLYBASIC ACID MATERIAL BEING PRESENT IN SUFFICIENT AMOUNTS TO CONVERT A MAJOR PORTION OF SAID ALKALI METAL SALT TO CARBON DIOXIDE ON CONTACT WITH MOISTURE, WHEREBY A STRONG EFFERVESCENT EFFECT RESULTS, SAID POLYBASIC ACID MATERIAL AND SAID ALKALI METAL SALT ALSO BEING PRESENT IN SAID COMPOSITION IN SUCH AMOUNTS THAT A PH FROM 2.0 TO 10.0 RESULTS WHEN THE COMPOSITION IS DISSOLVED IN WATER.
Claim 2
Dependent Claim
119 words
A NON-TOXIC PHARMACEUTICAL COMPOSITION WHICH EFFERVESCES ON CONTACT WITH MOISTURE WHICH COMPRISES A SOLID NON-TOXIC POLYBASIC ACIDIC MATERIAL HAVING AT LEAST ONE ACIDIC HYDROGEN ATOM, AND ALKALI METAL SALT OF CARBONIC ACID, AND A SURFACE ACTIVE AGENT, SAID POLYBASIC ACID MATERIAL AND SAID ALKALI METAL SALT CONSTITUTING TOGETHER A MAJOR PORTION OF SAID COMPOSITTION, SAID POLYBASIC ACID MATERIAL BEING PRESENT IN SUFFICIENT AMOUNTS TO CONVERT A MAJOR PORTION OF SAID ALKALI METAL SALT TO CARBON DIOXIDE ON CONTACT WITH MOISTURE, WHEREBY A STRONG EFFERVESCENT EFFECT RESULTS, SAID POLYBASIC ACID MATERIAL AND SAID ALKALI METAL SALT ALSO BEING PRESENT IN SAID COMPOSITION IN SUCH AMOUNTS THAT A PH FROM 2.0 TO 10.0 RESULTS WHEN THE COMPOSITION IS DISSOLVED IN WATER.
References Cited (Backward Citations)
US2623841A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |