US3189455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vesicular photographic materials containing a polyamide vehicle
Assignee: Kalvar Corp
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Filing: 1962-04-30
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Granted: 1965-06-15
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Expires: 1982-04-30
Abstract
No abstract record available.
Inventors
- 👤 Alfred F Daech
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:12
CPC Classifications
C; C08; C08L; C08L77/00; C08L77/02; C08L77/06; C08L2205/00; C08L2205/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A SCATTER CENTER PHOTOGRAPHIC MATERIAL FOR PRODUCING A RECORD BY LIGHT SCATTERING DISCONTINUITIES WITHIN AN OTHERWISE OPTICALLY HOMOGENEOUS VEHICLE, SAID MATERIAL CONSISTING ESSENTIALLY OF A DRY FILM OF WATER/ALCOHOL SOLUBLE SYNTHETIC POLYAMIDE WITH A LIGHT DECOMPOSABLE SOLID AGENT SUBSTANTIALLY UNIFORMLY DISPERSED THEREIN, SAID POLYAMIDE FILM HAVING A PERMEABILIY CONSTANT WITHIN THE RANGE OF 8.6X10**-16 AND 8.0X10**-10, SAID CONSTANT BEING THE NUMBER OF CUBIC CENTIMETERS OF NITROGEN TRANSMITTED AT 30*C. BY AN AREA OF ONE SQUARE CENTIMETER IN ONE SECOND WHEN THE PRESSURE GRADIENT IS ONE CENTIMETER OF MERCURY PER CENTIMETER OF TRANSMISSION LAYER THICKNESS AND SAID DECOMPOSABLE AGENT ITSELF BEING NON-REACTIVE TO SAID VEHICLE AND UPON EXPOSURE TO LIGHT DECOMPOSING INTO PRODUCTS WHICH ARE ALSO CHEMICALLY NON-REACTIVE TO SAID VEHICLE AND WHICH SOLELY UPON WARMING ARE VOLATILE TO FORM SAID RADIATION SCATTERING DISCONTINUITIES ONLY IN THE LIGHT STRUCK AREAS IN SAID POLYMER TO THEREBY FURNISH SAID RECORD.
Claim 2
Dependent Claim
147 words
A SCATTER CENTER PHOTOGRAPHIC MATERIAL FOR PRODUCING A RECORD BY LIGHT SCATTERING DISCONTINUITIES WITHIN AN OTHERWISE OPTICALLY HOMOGENEOUS VEHICLE, SAID MATERIAL CONSISTING ESSENTIALLY OF A DRY FILM OF WATER/ALCOHOL SOLUBLE SYNTHETIC POLYAMIDE WITH A LIGHT DECOMPOSABLE SOLID AGENT SUBSTANTIALLY UNIFORMLY DISPERSED THEREIN, SAID POLYAMIDE FILM HAVING A PERMEABILIY CONSTANT WITHIN THE RANGE OF 8.6X10**-16 AND 8.0X10**-10, SAID CONSTANT BEING THE NUMBER OF CUBIC CENTIMETERS OF NITROGEN TRANSMITTED AT 30*C. BY AN AREA OF ONE SQUARE CENTIMETER IN ONE SECOND WHEN THE PRESSURE GRADIENT IS ONE CENTIMETER OF MERCURY PER CENTIMETER OF TRANSMISSION LAYER THICKNESS AND SAID DECOMPOSABLE AGENT ITSELF BEING NON-REACTIVE TO SAID VEHICLE AND UPON EXPOSURE TO LIGHT DECOMPOSING INTO PRODUCTS WHICH ARE ALSO CHEMICALLY NON-REACTIVE TO SAID VEHICLE AND WHICH SOLELY UPON WARMING ARE VOLATILE TO FORM SAID RADIATION SCATTERING DISCONTINUITIES ONLY IN THE LIGHT STRUCK AREAS IN SAID POLYMER TO THEREBY FURNISH SAID RECORD.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |