US2530906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet packing and method of manufacture
Assignee: Johns Manville Corp
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Filing: 1947-06-28
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Granted: 1950-11-21
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Expires: 1967-06-28
Abstract
No abstract record available.
Inventors
- 👤 Henry J Palumbo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:19
CPC Classifications
C; C04; C04B; C04B26/00; C04B26/30; C04B26/32; C08; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/10; C08K7/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A FLEXIBLE SHEET WHICH RESISTS EMBRITTLEMENT AND HARDENING AT EXTREME HIGH AND LOW TEMPERATURES COMPRISING A MIXTURE OF INFUSIBLE INSOLUBLE POLYMERIZED DIALKYL SILICONE BINDER AND REINFORCING FIBERS INCLUDING 15-50% OF CROCIDOLITE ASBESTOS FIBERS, THE ALKYL RADICALS IN SAID BINDER BELONGING TO THE GROUP CONSISTING OF METHYL, ETHYL PROPYL, AND BUTYL.
Claim 2
Dependent Claim
50 words
A FLEXIBLE SHEET WHICH RESISTS EMBRITTLEMENT AND HARDENING AT EXTREME HIGH AND LOW TEMPERATURES COMPRISING A MIXTURE OF INFUSIBLE INSOLUBLE POLYMERIZED DIALKYL SILICONE BINDER AND REINFORCING FIBERS INCLUDING 15-50% OF CROCIDOLITE ASBESTOS FIBERS, THE ALKYL RADICALS IN SAID BINDER BELONGING TO THE GROUP CONSISTING OF METHYL, ETHYL PROPYL, AND BUTYL.
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) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |