US3248464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for making large celled material
Assignee: Dow Chemical Co
•
Filing: 1962-08-22
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Granted: 1966-04-26
•
Expires: 1982-08-22
Abstract
No abstract record available.
Inventors
- 👤 Telkes Maria
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:46
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/32; Y; Y10; Y10S; Y10S425/00; Y10S425/20; Y10T; Y10T428/00; Y10T428/25; Y10T428/254
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
THE PROCESS OF MAKING CORED LAMINATES COMPRISING FORMING HOLLOW BEADS OF A SIZE BETWEEN 1/4 AND 3/4 INCH BETWEEN WALLS OF THE BEADS OF A LIGHT TRANSMITTING MATERIAL WITH ADHERENT OUTER SURFACE ARRANGED IN, A MULTIPLE LAYERED ASSEMBLY MADE BY PLACING A PLURALITY OF LAYERS OF SAID BEADS BETWEEN OUTER SKINS OF LIGHT TRANSMITTING BONDABLE MATERIAL, AND COMPRESSING THE ASEMBLY TO COMPACT AND ADHERE THE BEADS TOGETHER AND TO ADHERE THE OUTER BEAD SURFACES TO SAID SKINS.
Claim 2
Dependent Claim
77 words
THE PROCESS OF MAKING CORED LAMINATES COMPRISING FORMING HOLLOW BEADS OF A SIZE BETWEEN 1/4 AND 3/4 INCH BETWEEN WALLS OF THE BEADS OF A LIGHT TRANSMITTING MATERIAL WITH ADHERENT OUTER SURFACE ARRANGED IN, A MULTIPLE LAYERED ASSEMBLY MADE BY PLACING A PLURALITY OF LAYERS OF SAID BEADS BETWEEN OUTER SKINS OF LIGHT TRANSMITTING BONDABLE MATERIAL, AND COMPRESSING THE ASEMBLY TO COMPACT AND ADHERE THE BEADS TOGETHER AND TO ADHERE THE OUTER BEAD SURFACES TO SAID SKINS.
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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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |