Patent US2632725A successfully refreshed from Google Patents.
US2632725A
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US
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Method of laminating lenses
Assignee: Individual
•
Filing: 1943-08-06
•
Granted: 1953-03-24
•
Expires: 1963-08-06
Abstract
No abstract record available.
Inventors
- 👤 Marks Alvin
- 👤 Marks Mortimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:41
CPC Classifications
G; G02; G02B; G02B3/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31627; Y10T428/3163
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A METHOD OF FORMING AN OPTICALLY ISOTROPIC LAMINATION THE STEPS COMPRISING APPLYING A LIQUID PLASTIC SOLUTION TO THE SURFACE OF AN OPTICAL ELEMENT, ROTATING THE OPTICAL ELEMENT ABOUT AN AXIS SUBSTANTIALLY PERPENDICULAR TO SAID SURFACE UNTIL THE PLASTIC SOLUTION IS SPREAD UNIFORMLY OVER THE SUPPORT IN A VERY THIN LAYER AND IS DRIED THEREON TO FORM A SOLID COATING, APPLYING A PLASTICIZER WHICH ONLY SLIGHTLY SOFTENS THE PLASTIC COATING TO THE COATED ELEMENT AND LAMINATING IT TO A SECOND OPTICAL ELEMENT UNDER LOW TEMPERATURE AND PRESSURE.
Claim 2
Independent Claim
86 words
A METHOD OF FORMING AN OPTICALLY ISOTROPIC LAMINATION THE STEPS COMPRISING APPLYING A LIQUID PLASTIC SOLUTION TO THE SURFACE OF AN OPTICAL ELEMENT, ROTATING THE OPTICAL ELEMENT ABOUT AN AXIS SUBSTANTIALLY PERPENDICULAR TO SAID SURFACE UNTIL THE PLASTIC SOLUTION IS SPREAD UNIFORMLY OVER THE SUPPORT IN A VERY THIN LAYER AND IS DRIED THEREON TO FORM A SOLID COATING, APPLYING A PLASTICIZER WHICH ONLY SLIGHTLY SOFTENS THE PLASTIC COATING TO THE COATED ELEMENT AND LAMINATING IT TO A SECOND OPTICAL ELEMENT UNDER LOW TEMPERATURE AND PRESSURE.
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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) | 1956-03-23 | 1956-09-22 | 1957-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-23 | 1960-09-22 | 1961-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-23 | 1964-09-22 | 1965-03-24 | $7700.00 | Window Closed / Lapsed |