US3207901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring basis weight of paper and the like
Assignee: Brun Corp
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Filing: 1962-07-30
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Granted: 1965-09-21
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Expires: 1982-07-30
Abstract
No abstract record available.
Inventors
- 👤 Jr William E Barker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:55
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/84; G01N21/88
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
APPARATUS FOR TESTING THE BASIS WEIGHT OF A MOVING SHEET OF PAPER AFTER IT HAS BEEN FORMED COMPRISING RADIANT ENERGY SENSING MEANS RESPONSIVE TO A BEAM OF RADIANT ENERGY OF SELECTED WAVELENGTH RANGE FOR PRODUCING A VARIABLE CURRENT REPRESENTATIVE OF BASIS WEIGHT VARIATIONS OF THE PAPER, A RADIANT ENERGY SOURCE FOR PROJECTING A BEAM OF RADIANT ENERGY INCLUDING SAID SELECTED WAVELENGTH RANGE THROUGH SAID SHEET OF PAPER ONTO SAID SENSING MEANS INDICATING MEANS RESPONSIVE TO THE CURENT VARIATIONS PRODUCED BY SAID SENSING MEANS FOR PRODUCING AN INDICATION OF THE BASIS WEIGHT VARIATIONS OF THE SHEET OF PAPER, AND MEANS FOR RESTRICTING THE WAVELENGTH RANGE OF THE BEAM OF ENERFFGY TO WHICH SAID SENSING MEANS RESPONDS TO WAVELENGTH RANGES LYING WITHIN THE NEAR INFRARED HAV-
Claim 2
Dependent Claim
124 words
APPARATUS FOR TESTING THE BASIS WEIGHT OF A MOVING SHEET OF PAPER AFTER IT HAS BEEN FORMED COMPRISING RADIANT ENERGY SENSING MEANS RESPONSIVE TO A BEAM OF RADIANT ENERGY OF SELECTED WAVELENGTH RANGE FOR PRODUCING A VARIABLE CURRENT REPRESENTATIVE OF BASIS WEIGHT VARIATIONS OF THE PAPER, A RADIANT ENERGY SOURCE FOR PROJECTING A BEAM OF RADIANT ENERGY INCLUDING SAID SELECTED WAVELENGTH RANGE THROUGH SAID SHEET OF PAPER ONTO SAID SENSING MEANS INDICATING MEANS RESPONSIVE TO THE CURENT VARIATIONS PRODUCED BY SAID SENSING MEANS FOR PRODUCING AN INDICATION OF THE BASIS WEIGHT VARIATIONS OF THE SHEET OF PAPER, AND MEANS FOR RESTRICTING THE WAVELENGTH RANGE OF THE BEAM OF ENERFFGY TO WHICH SAID SENSING MEANS RESPONDS TO WAVELENGTH RANGES LYING WITHIN THE NEAR INFRARED HAV-
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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |