Patent US3767386A successfully refreshed from Google Patents.
US3767386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compound cast-iron for making brake shoes
Assignee: KAISHA K UEDASA CHUZO SHO
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Filing: 1971-12-28
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Granted: 1973-10-23
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Expires: 1991-12-28
Abstract
Abstract Cast-iron composition for making brake shoes which composition, after casting, consists essentially of C 2.7-3.5%, Si 1.0-2.0%, Mn 0.4-1.5%, P 1.0-3.0%, S< 0.15% and Ti 0.3-0.7% and additionally includes either V 0.05-0.30% or Cr 0.10-1.25% or Mo 0.15-1.25%, the remaining proportion of the composition consisting of iron.
Inventors
- 👤 Y Ueda
- 👤 A Yoshioka
- 👤 H Fujiwara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:35
CPC Classifications
C; C22; C22C; C22C37/00; C22C37/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
18 words
A cast-iron composition according to claim 1 wherein the phosphorous is present in an amount of 1.90 percent.
References Cited (Backward Citations)
US1979015A
Cited
GB490100A
Cited
US2209248A
Cited
US2179695A
Cited
US2225997A
Cited
US3318423A
Cited
US3620334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |