US3301729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making cellular core structures
Assignee: Narad Inc
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Filing: 1964-08-12
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Granted: 1967-01-31
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Expires: 1984-08-12
Abstract
No abstract record available.
Inventors
- 👤 Robert J Kauffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:50
CPC Classifications
B; B31; B31D; B31D3/00; B31D3/02; B31D3/0223; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1003; Y10T156/1052; Y10T156/1056
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
THE METHOD OF FORMING CELLULAR CORE STRUCTURES FROM SHEET MATERIAL, COMPRISING THE STEPS OF: FORMING A PLURALITY OF PARALLEL SLITS IN SHEETS OF SAID MATERIAL AND EXTENDING FROM POSITIONS ADJACENT TO BUT INWARDLY OF ONE EDGE OF EACH SHEET TO POSITIONS ADJACENT TO BUT SPACED INWARDLY FROM THE OPPOSITE EDGE THEREOF, THEREBY FORMING A PLURALITY OF STRIPS OF MATERIAL INTEGRALLY JOINED AT THEIR ENDS TO MARGINAL BANDS; APPLYING SPACED SPOTS OF ADHESIVE MATERIAL ALONG THE UPPER FACE OF EACH OF SAID STRIPS OF EACH SHEET; STACKING A PLURALITY OF SAID SHEETS WITH THEIR RESPECTIVE STRIPS AND MARGINAL BANDS IN SUPER-POSED RELATION TO FORM AN ADHESIVELY BONDED PAD OF SHEETS; THEN SEPARATING ALL SAID MARGINAL BANDS FROM SAID PAD TO SEPARATE THE SAME INTO A PLURALITY OF STACKS OF ADHESIVELY BONDED STRIPS OF SAID SHEET MATERIAL.
Claim 2
Independent Claim
135 words
THE METHOD OF FORMING CELLULAR CORE STRUCTURES FROM SHEET MATERIAL, COMPRISING THE STEPS OF: FORMING A PLURALITY OF PARALLEL SLITS IN SHEETS OF SAID MATERIAL AND EXTENDING FROM POSITIONS ADJACENT TO BUT INWARDLY OF ONE EDGE OF EACH SHEET TO POSITIONS ADJACENT TO BUT SPACED INWARDLY FROM THE OPPOSITE EDGE THEREOF, THEREBY FORMING A PLURALITY OF STRIPS OF MATERIAL INTEGRALLY JOINED AT THEIR ENDS TO MARGINAL BANDS; APPLYING SPACED SPOTS OF ADHESIVE MATERIAL ALONG THE UPPER FACE OF EACH OF SAID STRIPS OF EACH SHEET; STACKING A PLURALITY OF SAID SHEETS WITH THEIR RESPECTIVE STRIPS AND MARGINAL BANDS IN SUPER-POSED RELATION TO FORM AN ADHESIVELY BONDED PAD OF SHEETS; THEN SEPARATING ALL SAID MARGINAL BANDS FROM SAID PAD TO SEPARATE THE SAME INTO A PLURALITY OF STACKS OF ADHESIVELY BONDED STRIPS OF SAID SHEET MATERIAL.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |