US3244582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light transmitting construction and process for its manufacture
Assignee: Individual
•
Filing: 1962-07-02
•
Granted: 1966-04-05
•
Expires: 1982-07-02
Abstract
No abstract record available.
Inventors
- 👤 Kuhl Georg Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:31
CPC Classifications
A; A01; A01G; A01G13/00; A01G13/30; A01G13/32; A01G13/33; A01G9/00; A01G9/14; A01G9/1438; B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/25; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31859; Y10T428/3188
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A MULTI-LAYER LIGHT TRANSMITTING CONSTRUCTION EXHIBITING REVERSIBLY VARIBLE LIGHT PERMEABILITY IN DEPENDENCE ON TEMPERATURE FO LIGHT CONDITIONS, SAID CONSTRUCTION ESSENTIALLY CONSISTING OF AN INTERMEDIATE LAYER OF A COMPLEX COMPOUND FROMED FROM PARTIALLY ACETALIZED POLYVINYL ALCOHOL, WATER AND AT LEAST TWO WATER SOLUBLE INORGANIC HYDRATE SALTS SELECTED FROM THE GROUP CONSISTING OF THE CHLORIDES, BROMIDES, IODIDES AND NITRATES OF LITHIUM, CALCIUM AND MAGNESIUM, SAID TWO SALTS HAVING DIFFERENT ANIONS, SAID TWO HYDRATE SALTS BEING PRESENT IN A CONCENTRATION IN SAID COMPLEX COMPOUND SUFFICIENT SO THAT THE AVERAGE PARTIAL PRESSURE OF THE WATER VAPOR IN THE COMPLEX COMPOUND IS ALWAYS BELOW THE AVERAGE PARTIAL PRESSURE OF THE WATER VAPOR OF THE AMBIENT ATMOSPHERE, A FIRST LIGHT TRANSMITTING AND WATER-INSOLUBLE COVER LAYER COVERING ONE SIDE OF SAID INTERMEDIATE LAYER, AND A SECOND LIGHT TRANSMITTING AND WATER-INSOLUBLE COVER LAYER COVERING THE OPPOSITE SIDE OF SAID INTERMEDIATE LAYER, SAID FIRST AND SECOND COVER LAYERS BEING MADE FROM A PLASTIC MATERIAL, AT LEAST ONE OF SAID FRIST AND SECOND COVER LAYERS BEING PERMEABLE TO WATER VAPOR.
Claim 2
Dependent Claim
170 words
A MULTI-LAYER LIGHT TRANSMITTING CONSTRUCTION EXHIBITING REVERSIBLY VARIBLE LIGHT PERMEABILITY IN DEPENDENCE ON TEMPERATURE FO LIGHT CONDITIONS, SAID CONSTRUCTION ESSENTIALLY CONSISTING OF AN INTERMEDIATE LAYER OF A COMPLEX COMPOUND FROMED FROM PARTIALLY ACETALIZED POLYVINYL ALCOHOL, WATER AND AT LEAST TWO WATER SOLUBLE INORGANIC HYDRATE SALTS SELECTED FROM THE GROUP CONSISTING OF THE CHLORIDES, BROMIDES, IODIDES AND NITRATES OF LITHIUM, CALCIUM AND MAGNESIUM, SAID TWO SALTS HAVING DIFFERENT ANIONS, SAID TWO HYDRATE SALTS BEING PRESENT IN A CONCENTRATION IN SAID COMPLEX COMPOUND SUFFICIENT SO THAT THE AVERAGE PARTIAL PRESSURE OF THE WATER VAPOR IN THE COMPLEX COMPOUND IS ALWAYS BELOW THE AVERAGE PARTIAL PRESSURE OF THE WATER VAPOR OF THE AMBIENT ATMOSPHERE, A FIRST LIGHT TRANSMITTING AND WATER-INSOLUBLE COVER LAYER COVERING ONE SIDE OF SAID INTERMEDIATE LAYER, AND A SECOND LIGHT TRANSMITTING AND WATER-INSOLUBLE COVER LAYER COVERING THE OPPOSITE SIDE OF SAID INTERMEDIATE LAYER, SAID FIRST AND SECOND COVER LAYERS BEING MADE FROM A PLASTIC MATERIAL, AT LEAST ONE OF SAID FRIST AND SECOND COVER LAYERS BEING PERMEABLE TO WATER VAPOR.
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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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |