US4003653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing color slides from black and white originals
Assignee: General Electric Co
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Filing: 1975-03-17
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Granted: 1977-01-18
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Expires: 1995-03-17
Abstract
Abstract In the method of producing color slides from black and white originals, a light box, a glass plate and a camera are used. Also utilized is a positive and negative of a black and white original. In the first step, a film frame in the camera is exposed to the positive which is between the camera and the light box. Any desired background texture between the positive and the light box and a color filter on the camera lens may be used. In succeeding steps, the negative is used, mounted between the camera and the light box, and various portions of the negative are blacked out and different colored filters used while continuing to expose the film frame in the camera to various portions of the negative.
Inventors
- 👤 II James H. Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:44
CPC Classifications
G; G03; G03C; G03C7/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
113 words
A method of making a color slide from a black and white original comprising the steps of a. providing a positive and a negative of the black and white original b. placing said positive between a light box and a camera c. placing a color filter on the lens of said camera d. exposing a film frame in said camera to said positive e. removing said positive and placing said negative between said light box and said camera f. providing another color filter to said camera lens g. exposing the same film frame to said negative whereby a color slide is provided having one color of background and a second color of foreground.
Claim 2
Independent Claim
113 words
A method of making a color slide from a black and white original comprising the steps of a. providing a positive and a negative of the black and white original b. placing said positive between a light box and a camera c. placing a color filter on the lens of said camera d. exposing a film frame in said camera to said positive e. removing said positive and placing said negative between said light box and said camera f. providing another color filter to said camera lens g. exposing the same film frame to said negative whereby a color slide is provided having one color of background and a second color of foreground.
Claim 3
Dependent Claim
29 words
A method of making color slides as set forth in claim 1, in which the steps of using said positive and said negative of the original artwork is reversed.
Claim 4
Dependent Claim
36 words
A method of making color slides as set forth in claim 1, in which portions of said negative are blacked out for one exposure and other portions of said negative are blacked out for another exposure.
Claim 5
Dependent Claim
37 words
A method of making color slides as set forth in claim 1, in which color paper strips are placed on portions of said negative and said negative is exposed to said film frame through a clear lens.
Claim 6
Independent Claim
159 words
A method of making a color slide from a black and white original comprising the steps of a. providing a positive and a negative of the black and white original b. providing a frame member with a light box mounted thereon c. providing a glass plate secured to the frame in front of said light box d. providing a camera mounted on said frame beyond said glass plate e. placing said positive on said glass plate f. placing a color filter on the lens of said camera g. exposing a film frame in said camera to said positive h. removing said positive and placing said negative on said glass plate i. providing another color filter to said camera lens j. exposing the same film frame to said negative whereby a color slide is provided having a colored background of the color filter in step (f) and a colored foreground of the color provided in the filter of step (i).
Claim 7
Independent Claim
159 words
A method of making a color slide from a black and white original comprising the steps of a. providing a positive and a negative of the black and white original b. providing a frame member with a light box mounted thereon c. providing a glass plate secured to the frame in front of said light box d. providing a camera mounted on said frame beyond said glass plate e. placing said positive on said glass plate f. placing a color filter on the lens of said camera g. exposing a film frame in said camera to said positive h. removing said positive and placing said negative on said glass plate i. providing another color filter to said camera lens j. exposing the same film frame to said negative whereby a color slide is provided having a colored background of the color filter in step (f) and a colored foreground of the color provided in the filter of step (i).
Claim 8
Dependent Claim
29 words
A method of making color slides as set forth in claim 5, in which the steps of using said positive and said negative of the original artwork are reversed.
Claim 9
Dependent Claim
37 words
A method of making a color slide as set forth in claim 5, in which said positive and said negative are provided with registration holes and registration pins are provided on said frame near said glass plate.
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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) | 1980-01-18 | 1980-07-19 | 1981-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-18 | 1984-07-19 | 1985-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-18 | 1988-07-19 | 1989-01-18 | $7700.00 | Window Closed / Lapsed |