US2833680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making optical laminations
Assignee: Individual
•
Filing: 1956-01-30
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Granted: 1958-05-06
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Expires: 1976-01-30
Abstract
No abstract record available.
Inventors
- 👤 William C Kneeling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:46
CPC Classifications
B; B29; B29D; B29D11/00; B29D11/0073; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31627; Y10T428/3163
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A METHOD FOR MAKING AN OPTICAL LAMINATION WHICH INCLUDES THE STEPS OF: POURING A PLASTIC SOLUTION ON THE CENTRAL PART OF A FIRST OPTICAL ELEMENT; SPINNING SAID FIRST ELEMENT ABOUT AN AXIS THROUGH SAID CENTRAL PART TO CENTRIFUGALLY SPREAD SAID PLASTIC SOLUTION AS A THIN COATING ON THE SURFACE OF SAID FIRST ELEMENT; EXHAUSTING GAS OVER SAID SPREADING COATING BY BLOWING IT FROM THE PERIPHERAL REGION OF SAID SPINNING FIRST ELEMENT TO REMOVE PARTICLES THROWN OFF BY SAID SPREADING COATING; LAMINATION A SECOND OPTICAL ELEMENT TO THE COATED SURFACE OF SAID FIRST OPTICAL ELEMENT; AND SUBJECTING SAID LAMINATION TO SOFTENING TEMPERATURE OVER 170*F. AND ELEVATED PRESSURE TO EXPEL RESIDUAL AIR FROM BETWEEN SAID FIRST AND SECOND OPTICAL ELEMENTS.
Claim 2
Independent Claim
118 words
A METHOD FOR MAKING AN OPTICAL LAMINATION WHICH INCLUDES THE STEPS OF: POURING A PLASTIC SOLUTION ON THE CENTRAL PART OF A FIRST OPTICAL ELEMENT; SPINNING SAID FIRST ELEMENT ABOUT AN AXIS THROUGH SAID CENTRAL PART TO CENTRIFUGALLY SPREAD SAID PLASTIC SOLUTION AS A THIN COATING ON THE SURFACE OF SAID FIRST ELEMENT; EXHAUSTING GAS OVER SAID SPREADING COATING BY BLOWING IT FROM THE PERIPHERAL REGION OF SAID SPINNING FIRST ELEMENT TO REMOVE PARTICLES THROWN OFF BY SAID SPREADING COATING; LAMINATION A SECOND OPTICAL ELEMENT TO THE COATED SURFACE OF SAID FIRST OPTICAL ELEMENT; AND SUBJECTING SAID LAMINATION TO SOFTENING TEMPERATURE OVER 170*F. AND ELEVATED PRESSURE TO EXPEL RESIDUAL AIR FROM BETWEEN SAID FIRST AND SECOND OPTICAL ELEMENTS.
References Cited (Backward Citations)
US2632725A
Cited
US2386591A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |