US3133133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making light-weight ceramic structures
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1960-12-05
•
Granted: 1964-05-12
•
Expires: 1980-12-05
Abstract
No abstract record available.
Inventors
- 👤 Avard F Fairbanks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:00
CPC Classifications
B; B28; B28B; B28B1/00; B28B1/26; B28B1/30; B28B11/00; B28B11/003; B28B7/00; B28B7/34; B28B7/342; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1003; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24165
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A METHOD OF PRODUCING LIGHT-WEIGHT CERAMIC MIRROR SUPPORT STRUCTURES, COMPRISING THE STEPS OF: COATING A DESTRUCTIBLE CRINKLED HONEYCOMB STRUCTURE WITH CLAY SLIP; COATING A DESTRUCTIBLE FLEXIBLE SHEET MATERIALWITH CLAY SLIP; PLACING THE DESTRUCTIBLE SHEET MATERIAL ON THE DESTRUCTIBLE CRINKLED HONEYCOMB STRUCTURE; FORMING THE SHEET AND HONEYCOMB STRUCTURE INTO A SELECTED LIGHT FOCUSING CONTOUR; AND BAKING SAID COATED AND FORMED SHEET AND HONEYCOMB STRUCTURE UNTIL THE CLAYSLIP FORMS A CERAMIC STRUCTURE HAVING THE CONTOUR AND SHAPE OF BUT SUBSTANTIALLY COMPLETELY FREE OF THE DESTRUCTIBLE CRINKLED HONEYCOMB STRUCTURE AND DESTRUCTIBLE SHEET MATERIAL.
Claim 2
Independent Claim
90 words
A METHOD OF PRODUCING LIGHT-WEIGHT CERAMIC MIRROR SUPPORT STRUCTURES, COMPRISING THE STEPS OF: COATING A DESTRUCTIBLE CRINKLED HONEYCOMB STRUCTURE WITH CLAY SLIP; COATING A DESTRUCTIBLE FLEXIBLE SHEET MATERIALWITH CLAY SLIP; PLACING THE DESTRUCTIBLE SHEET MATERIAL ON THE DESTRUCTIBLE CRINKLED HONEYCOMB STRUCTURE; FORMING THE SHEET AND HONEYCOMB STRUCTURE INTO A SELECTED LIGHT FOCUSING CONTOUR; AND BAKING SAID COATED AND FORMED SHEET AND HONEYCOMB STRUCTURE UNTIL THE CLAYSLIP FORMS A CERAMIC STRUCTURE HAVING THE CONTOUR AND SHAPE OF BUT SUBSTANTIALLY COMPLETELY FREE OF THE DESTRUCTIBLE CRINKLED HONEYCOMB STRUCTURE AND DESTRUCTIBLE SHEET MATERIAL.
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) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |