US3290850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light diffusing panels
Assignee: Union Carbide Corp
•
Filing: 1964-05-04
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Granted: 1966-12-13
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Expires: 1984-05-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert E Byrne
- 👤 Alfred R Tavarozzi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:19
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A LIGHT DIFFUSING PANEL STRUCTURE COMPRISING AT LEAST ONE ELONGATED LIGHT DIFFUSING PLASTIC PANEL, EACH OF THE LONGER SIDES OF SAID PANEL FOLDING LONGITUDINALLY AND CONVEXLY UPWARD AND OUTWARD, SAID LONGERR SIDES THEN FOLDING UPWARD AND INWARD AND TERMINATING IN SUBSTANTIALLY OPPOSED FLANGES, EACH OF SAID FLANGES HAVING AN UPWARDLY EXTENDING PORTION DISPOSED AT AN ACUTE ANGLE WITH THE NORMAL PLANE OF THE PLASTIC PANEL AND A SECOND PORTION INTEGRAL WITH SAID UPWARDLY EXTENDING PORTION AND COMPRISING AN OUTWARD LATERAL EXTENSION THEREOF, EACH OF SAID FLANGES ADAPTED TO ENGAGE WITH LIKE FLANGES OF ADJACENT PANELS AND PROVIDE LONGITUDINAL REINFORCEMENT TO EACH OF SAID PANELS, SAID PANEL BEING ADAPTED TO BE SUPPORTED AT THE LATERAL ENDS TEHREOF.
Claim 2
Dependent Claim
116 words
A LIGHT DIFFUSING PANEL STRUCTURE COMPRISING AT LEAST ONE ELONGATED LIGHT DIFFUSING PLASTIC PANEL, EACH OF THE LONGER SIDES OF SAID PANEL FOLDING LONGITUDINALLY AND CONVEXLY UPWARD AND OUTWARD, SAID LONGERR SIDES THEN FOLDING UPWARD AND INWARD AND TERMINATING IN SUBSTANTIALLY OPPOSED FLANGES, EACH OF SAID FLANGES HAVING AN UPWARDLY EXTENDING PORTION DISPOSED AT AN ACUTE ANGLE WITH THE NORMAL PLANE OF THE PLASTIC PANEL AND A SECOND PORTION INTEGRAL WITH SAID UPWARDLY EXTENDING PORTION AND COMPRISING AN OUTWARD LATERAL EXTENSION THEREOF, EACH OF SAID FLANGES ADAPTED TO ENGAGE WITH LIKE FLANGES OF ADJACENT PANELS AND PROVIDE LONGITUDINAL REINFORCEMENT TO EACH OF SAID PANELS, SAID PANEL BEING ADAPTED TO BE SUPPORTED AT THE LATERAL ENDS TEHREOF.
References Cited (Backward Citations)
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |