US3521058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of improving the definition of detail of both hard and soft substance in radiographs
Assignee: Individual
•
Filing: 1965-09-08
•
Granted: 1970-07-21
•
Expires: 1985-09-08
Abstract
No abstract record available.
Inventors
- 👤 Georg S Mittelstaedt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:00
CPC Classifications
G; G03; G03B; G03B42/00; G03B42/02; Y; Y10; Y10S; Y10S430/00; Y10S430/167; Y10S430/168
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
IN A RADIOGRAPHIC METHOD COMPRISING TRANSMITTING PENETRATING RAYS FROM A SUITABLE SOURCE THROUGH AN OBJECT TO PHOTORAPHIC FILM, THE IMPROVEMENT CONSISTING IN PASSING THE PENETRATING RAYS THROUGH A SCREEN WITH ALTERNATE SILVER-BEARING AND SILVERLESS AREAS TO CHANGE THE RAY IMAGE TO AN ANALYTIC INTENSITY PATTERN, THE SILVERLESS AREAS PERMITTING THE PENETRATING RAYS TO PASS THROUGH EASILY FOR PRIMARILY DEFINING HARD SUBSTANCE ON THE EMULSION DIRECTLY BEHIND THESE SILVERLESS AREAS, BUT THE SILVERBEARING AREAS REDUCING THE INTENSITIES OF THE PENETRATING RAYS PASSING THERETHROUGH FOR PRIMARILY DEFINING RELATIVELY SOFT SUBSTANCE ON THE EMULSION DIRECTLY BEHIND THE SILVERBEARING AREAS, ALL OBJECT AREAS BEING DEFINED IN THE RESULTING RADIOGRAPH WITH DEFINITION OF DETAIL IN HARD SUBSTANCE AND IN RELATIVELY SOFT SUBSTANCE.
Claim 2
Dependent Claim
117 words
IN A RADIOGRAPHIC METHOD COMPRISING TRANSMITTING PENETRATING RAYS FROM A SUITABLE SOURCE THROUGH AN OBJECT TO PHOTORAPHIC FILM, THE IMPROVEMENT CONSISTING IN PASSING THE PENETRATING RAYS THROUGH A SCREEN WITH ALTERNATE SILVER-BEARING AND SILVERLESS AREAS TO CHANGE THE RAY IMAGE TO AN ANALYTIC INTENSITY PATTERN, THE SILVERLESS AREAS PERMITTING THE PENETRATING RAYS TO PASS THROUGH EASILY FOR PRIMARILY DEFINING HARD SUBSTANCE ON THE EMULSION DIRECTLY BEHIND THESE SILVERLESS AREAS, BUT THE SILVERBEARING AREAS REDUCING THE INTENSITIES OF THE PENETRATING RAYS PASSING THERETHROUGH FOR PRIMARILY DEFINING RELATIVELY SOFT SUBSTANCE ON THE EMULSION DIRECTLY BEHIND THE SILVERBEARING AREAS, ALL OBJECT AREAS BEING DEFINED IN THE RESULTING RADIOGRAPH WITH DEFINITION OF DETAIL IN HARD SUBSTANCE AND IN RELATIVELY SOFT SUBSTANCE.
References Cited (Backward Citations)
US2344823A
Cited
US2344824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-20 | 1974-01-19 | 1974-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-20 | 1978-01-19 | 1978-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-20 | 1982-01-19 | 1982-07-21 | $7700.00 | Window Closed / Lapsed |