Patent US422847A successfully refreshed from Google Patents.
Patent US3044937A successfully refreshed from Google Patents.
US3044937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and composition for examining eyes with fluorescent vitamin b
Assignee: Barnes Hind Diagnostics Inc
•
Filing: 1960-05-16
•
Granted: 1962-07-17
•
Expires: 1980-05-16
Abstract
No abstract record available.
Inventors
- 👤 Joseph Z Krezanoski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:41
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/495; A61K31/505; A61K31/519; A61K31/525; A61B; A61B3/00; A61K9/00; A61K9/0012; A61K9/0048
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
53 words
THE PROCESS OF EXAMINING COMPRISING: INSTILLING IN THE EYE AN AQUEOUS SOLUTION OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF VITAMIN B2 AND WATER-SOLUBLE SALTS OF VITAMINB2 AND EXAMINING THE EYE UNDER AN INCANDES CENT SOURCE EMPOLYING A SUITABLE FILTER IN THE ABSENCE OF SUFFICIENT VISUAL LIGHT TO OBSURE THE FLUORESCENT EFFECT.
Claim 2
Dependent Claim
53 words
THE PROCESS OF EXAMINING COMPRISING: INSTILLING IN THE EYE AN AQUEOUS SOLUTION OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF VITAMIN B2 AND WATER-SOLUBLE SALTS OF VITAMINB2 AND EXAMINING THE EYE UNDER AN INCANDES CENT SOURCE EMPOLYING A SUITABLE FILTER IN THE ABSENCE OF SUFFICIENT VISUAL LIGHT TO OBSURE THE FLUORESCENT EFFECT.
Claim 3
Dependent Claim
39 words
A SOLUTION FOR THE EXAMINATION OF EYES COMPRISING AN ISOTONIC AQUEOUS SOLUTION OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF VITAMIN B2 AND WATER-SOLUBLE SALTS OF VITAMIN B2 WHEREIN SAID SOLUTION CONTAINS AT LEAST 0.01% OF SAID MEMBER.
Claim 4
Dependent Claim
39 words
A SOLUTION FOR THE EXAMINATION OF EYES COMPRISING AN ISOTONIC AQUEOUS SOLUTION OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF VITAMIN B2 AND WATER-SOLUBLE SALTS OF VITAMIN B2 WHEREIN SAID SOLUTION CONTAINS AT LEAST 0.01% OF SAID MEMBER.
References Cited (Backward Citations)
US2438743A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-16 | 1966-01-15 | 1966-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-16 | 1970-01-15 | 1970-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-16 | 1974-01-15 | 1974-07-17 | $7700.00 | Window Closed / Lapsed |