US3074312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exposure meter
Assignee: Individual
•
Filing: 1958-04-28
•
Granted: 1963-01-22
•
Expires: 1978-04-28
Abstract
No abstract record available.
Inventors
- 👤 Gordon D Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:07
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/42; G01J1/4209; G01J1/4219
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
191 words
A PHOTOELECTRIC DENSITOMETER FOR EXAMINING A NEGATIVE IMAGE TO CONTROL PRINT DENSITY IN SELECTED AREAS OF THE IMAGE ON PAPER OF KNOWN CHARACTERISTICS, SAID DENSITOMETER COMPRISING A PHOTOELECTRIC TRANSDUCER HAVING AN OUTPUT RELATED TO LIGHT INTENSITY IN A SELECTED AREA OF A LIGHT IMAGE, A MANUALLY OPERABLE DENSITY CONTROL ELECTRICALLY CONNECTED TO SAID TRANSDUCER FOR VARYING THE SENSITIVITY THEREOF, SAID DENSITY CONTROL HAVING INDICIA REPRESENTATIVE OF A RANGE OF PRINT DENSITIES, A MANUALLY OPERABLE VARIABLE TIME CONTROL FOR CONVERTING THE OUTPUT FROM SAID TRANSDUCER TO AN ELECTRICAL POTENTIAL, SAID TIME CONTROL HAVING INDICIA REPRESENTATIVE OF A RANGE OF EXPOSURE TIME, A MANUALLY OPERABLE PAPER SPEED CONTROL FOR ESTABLISHING A REFERENCE POTENTIAL, SAID PAPER SPEED CONTROL HAVING INDICIA REPRESENTATIVE OF A RANGE OF PRINTING PAPER SPEEDS, AND ELECTRICAL INDICATING MEANS FOR COMPARING SAID TIME AND REFERENCE POTENTIALS, SAID TIME CONTROL BEING ADJUSTABLE TO BALANCE SAID TIME AND REFERENCE POTENTIALS WHEREUPON THE INDICIA THEREOF IS REPRESENTATIVE OF AN EXPOSURE TIME NECESSARY FOR A PRINT HAVING A DENSITY IN SAID SELECTED AREA OF THE IMAGE AS REPRESENTED BY THE INDICIA OF SAID DENSITY CONTROL, SAID PRINT DENSITY CONTROL BEING ADJUSTABLE UPON EXAMINATION OF ANOTHER
Claim 2
Dependent Claim
191 words
A PHOTOELECTRIC DENSITOMETER FOR EXAMINING A NEGATIVE IMAGE TO CONTROL PRINT DENSITY IN SELECTED AREAS OF THE IMAGE ON PAPER OF KNOWN CHARACTERISTICS, SAID DENSITOMETER COMPRISING A PHOTOELECTRIC TRANSDUCER HAVING AN OUTPUT RELATED TO LIGHT INTENSITY IN A SELECTED AREA OF A LIGHT IMAGE, A MANUALLY OPERABLE DENSITY CONTROL ELECTRICALLY CONNECTED TO SAID TRANSDUCER FOR VARYING THE SENSITIVITY THEREOF, SAID DENSITY CONTROL HAVING INDICIA REPRESENTATIVE OF A RANGE OF PRINT DENSITIES, A MANUALLY OPERABLE VARIABLE TIME CONTROL FOR CONVERTING THE OUTPUT FROM SAID TRANSDUCER TO AN ELECTRICAL POTENTIAL, SAID TIME CONTROL HAVING INDICIA REPRESENTATIVE OF A RANGE OF EXPOSURE TIME, A MANUALLY OPERABLE PAPER SPEED CONTROL FOR ESTABLISHING A REFERENCE POTENTIAL, SAID PAPER SPEED CONTROL HAVING INDICIA REPRESENTATIVE OF A RANGE OF PRINTING PAPER SPEEDS, AND ELECTRICAL INDICATING MEANS FOR COMPARING SAID TIME AND REFERENCE POTENTIALS, SAID TIME CONTROL BEING ADJUSTABLE TO BALANCE SAID TIME AND REFERENCE POTENTIALS WHEREUPON THE INDICIA THEREOF IS REPRESENTATIVE OF AN EXPOSURE TIME NECESSARY FOR A PRINT HAVING A DENSITY IN SAID SELECTED AREA OF THE IMAGE AS REPRESENTED BY THE INDICIA OF SAID DENSITY CONTROL, SAID PRINT DENSITY CONTROL BEING ADJUSTABLE UPON EXAMINATION OF ANOTHER
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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) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |