Patent US2612462A successfully refreshed from Google Patents.
US2612462A
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Laminated insulating block and method of making the same
Assignee: Johns Manville Corp
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Filing: 1947-11-20
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Granted: 1952-09-30
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Expires: 1967-11-20
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Zettel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:11
CPC Classifications
B; B29; B29C; B29C70/00; B27; B27N; B27N3/00; B27N3/02; B27N3/06; H; H01; H01B; H01B3/00; Y; Y10; Y10T; Y10T442/00; Y10T442/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
A METHOD COMPRISING, FORMING A FIBROUS, FELTED LAYER CONTAINING A BINDER, FORMING A LAYER OF FIBROUS BINDER CONTAINING AGGREGATES ON SAID FELTED LAYER, COMPRESSING THE COMPOSITE BODY THUS
Claim 2
Independent Claim
28 words
A METHOD COMPRISING, FORMING A FIBROUS, FELTED LAYER CONTAINING A BINDER, FORMING A LAYER OF FIBROUS BINDER CONTAINING AGGREGATES ON SAID FELTED LAYER, COMPRESSING THE COMPOSITE BODY THUS
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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) | 1955-09-30 | 1956-03-31 | 1956-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-30 | 1960-03-31 | 1960-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-30 | 1964-03-31 | 1964-09-30 | $7700.00 | Window Closed / Lapsed |