Patent US3140143A successfully refreshed from Google Patents.
US3140143A
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Information recording
Assignee: 3M Co
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Filing: 1960-11-18
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Granted: 1964-07-07
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Expires: 1980-11-18
Abstract
No abstract record available.
Inventors
- 👤 Alfred F Kaspaul
- 👤 Erika E Kaspaul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:31
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/04; B; B41; B41M; B41M7/00; C23C14/042; Y; Y10; Y10S; Y10S101/00; Y10S101/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
THE PROCESS FOR RECORDING INFORMATIN, WHICH CONSISTS ESSENTAILLY IN THE STEPS OF PRODUCING AN INVIDSIBLE LATENT IMAGE UPON A SUBSTANTIALLY INERT, SUBSTANTIALLY ANHYDROUS SOLID SUBSTRATE HAVING AN INORGANIC METAL COMPOUND AS A FUNCTINAL PART OF THE SURFACE THEREOF BY DEPOSITING AT LEAST TRACE AMOUNTS OF AN AQUEOUS FLUID IN AREAS WHERE A LATENT IMAGE IS TO BE FORMED, REMOVING ANY VISIBLE MOISTURE, AND TEHREAFTER, WHILE MAINTAING THE SAID SUBSTRATE IN VACUO, EXPOSING THE SAID SUBSTRATE TO VAPOR DEPOSITION OF A METAL OF THE GROUP CONSISTING O FMAGNESIUM, ZINC, CADMIUM AND MERCURY FOR A PERIOD OF TIME SUFFICIENT TO PRODUCE A DISTINGUISHABLE IMAGE CORRESPONDING TO SAID LATENT IMAGE.
Claim 2
Dependent Claim
107 words
THE PROCESS FOR RECORDING INFORMATIN, WHICH CONSISTS ESSENTAILLY IN THE STEPS OF PRODUCING AN INVIDSIBLE LATENT IMAGE UPON A SUBSTANTIALLY INERT, SUBSTANTIALLY ANHYDROUS SOLID SUBSTRATE HAVING AN INORGANIC METAL COMPOUND AS A FUNCTINAL PART OF THE SURFACE THEREOF BY DEPOSITING AT LEAST TRACE AMOUNTS OF AN AQUEOUS FLUID IN AREAS WHERE A LATENT IMAGE IS TO BE FORMED, REMOVING ANY VISIBLE MOISTURE, AND TEHREAFTER, WHILE MAINTAING THE SAID SUBSTRATE IN VACUO, EXPOSING THE SAID SUBSTRATE TO VAPOR DEPOSITION OF A METAL OF THE GROUP CONSISTING O FMAGNESIUM, ZINC, CADMIUM AND MERCURY FOR A PERIOD OF TIME SUFFICIENT TO PRODUCE A DISTINGUISHABLE IMAGE CORRESPONDING TO SAID LATENT IMAGE.
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) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |