US4469779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infrared color photographic film
Assignee: ERIM International Inc
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Filing: 1983-03-16
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Granted: 1984-09-04
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Expires: 2003-03-16
Abstract
Abstract Infrared color film is constructed with a particular arrangement of dye sensitized layers so that the film may respond to the entire visible spectrum, including the blue visible band, as well as the infrared band by choosing the appropriate camera lens filter.
Inventors
- 👤 Gwynn H. Suits
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:25
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/16; G03C5/164; G03C7/00; G03C7/26
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
74 words
Infrared color photographic film comprising: a transparent base; first and second layers adjacent the base, one of which is dye sensitized to the infrared band, the other of which is dye sensitized to the visible red band; a third layer including means for filtering out light in the visible blue band from impinging the first and second layers during exposure of the film; and an outer layer dye sensitized to the visible green band.
Claim 2
Dependent Claim
74 words
Infrared color photographic film comprising: a transparent base; first and second layers adjacent the base, one of which is dye sensitized to the infrared band, the other of which is dye sensitized to the visible red band; a third layer including means for filtering out light in the visible blue band from impinging the first and second layers during exposure of the film; and an outer layer dye sensitized to the visible green band.
Claim 3
Dependent Claim
28 words
The film of claim 1 used in combination with a minus green camera lens filter whereby the film responds to light in the blue, red and infrared bands.
Claim 4
Dependent Claim
28 words
The film of claim 1 used in combination with a camera having no filter whereby the film responds to light in the combined blue-green, red and infrared bands.
Claim 5
Dependent Claim
28 words
The film of claim 1 used in combination with a minus blue camera lens filter whereby the film responds to light in the green, red and infrared bands.
Claim 6
Independent Claim
131 words
A method of generating color infrared pictures, said method comprising: inserting film in a camera, said film having a transparent base; first and second layers adjacent the base, one of which is dye sensitized to the infrared band and the other of which is dye sensitized to the visible red band; a third layer including means for filtering out light in the visible blue band from impinging the first and second layers during exposure; and an outer layer dye sensitized to the visible green band; mounting a minus-green lens filter on the camera; exposing the film; developing the film in such manner that the means for filtering light in the visible blue band becomes transparent; and whereby the developed picture contains image information relating to the blue, red and infrared bands.
Claim 7
Independent Claim
131 words
A method of generating color infrared pictures, said method comprising: inserting film in a camera, said film having a transparent base; first and second layers adjacent the base, one of which is dye sensitized to the infrared band and the other of which is dye sensitized to the visible red band; a third layer including means for filtering out light in the visible blue band from impinging the first and second layers during exposure; and an outer layer dye sensitized to the visible green band; mounting a minus-green lens filter on the camera; exposing the film; developing the film in such manner that the means for filtering light in the visible blue band becomes transparent; and whereby the developed picture contains image information relating to the blue, red and infrared bands.
Claim 8
Independent Claim
124 words
A method of generating color infrared pictures, said method comprising: inserting film into a camera, said film having a transparent base; first and second layers adjacent the base, one of which is dye sensitized to the infrared band, the other of which is dye sensitized to the visible red band; a third layer including means for filtering out light in the visible blue band from impinging the first and second layers during exposure; and an outer layer dye sensitized to the visible green band; exposing the film; developing the film in such manner that the means for filtering out light in the visible blue band becomes transparent; and whereby the developed picture contains image information relating to the combined blue-green, red and infrared bands.
Claim 9
Independent Claim
124 words
A method of generating color infrared pictures, said method comprising: inserting film into a camera, said film having a transparent base; first and second layers adjacent the base, one of which is dye sensitized to the infrared band, the other of which is dye sensitized to the visible red band; a third layer including means for filtering out light in the visible blue band from impinging the first and second layers during exposure; and an outer layer dye sensitized to the visible green band; exposing the film; developing the film in such manner that the means for filtering out light in the visible blue band becomes transparent; and whereby the developed picture contains image information relating to the combined blue-green, red and infrared bands.
Claim 10
Independent Claim
131 words
A method of generating color infrared pictures, said method comprising: inserting film into a camera, said film having a transparent base; first and second layers adjacent the base, one of which is dye sensitized to the infrared band, the other of which is dye sensitized to the visible red band; a third layer including means for filtering out light in the visible blue band from impinging the first and second layers during exposure; and an outer layer dye sensitized to the visible green band; mounting a minus-blue lens filter on the camera; exposing the film; developing the film in such manner that the means for filtering out light in the visible blue band becomes transparent; and whereby the developed picture contains image information relating to the green, red and infrared bands.
Claim 11
Independent Claim
131 words
A method of generating color infrared pictures, said method comprising: inserting film into a camera, said film having a transparent base; first and second layers adjacent the base, one of which is dye sensitized to the infrared band, the other of which is dye sensitized to the visible red band; a third layer including means for filtering out light in the visible blue band from impinging the first and second layers during exposure; and an outer layer dye sensitized to the visible green band; mounting a minus-blue lens filter on the camera; exposing the film; developing the film in such manner that the means for filtering out light in the visible blue band becomes transparent; and whereby the developed picture contains image information relating to the green, red and infrared bands.
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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) | 1987-09-04 | 1988-03-05 | 1988-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-04 | 1992-03-05 | 1992-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-04 | 1996-03-05 | 1996-09-04 | $7700.00 | Window Closed / Lapsed |