US3841848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
HARD WATCH CASE COMPRISING TiN, T, AND AT LEAST ONE OF Mn, Al AND V
Assignee: Suwa Seikosha KK
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Filing: 1973-03-15
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Granted: 1974-10-15
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Expires: 1993-03-15
Abstract
Abstract A watch case resistant to mechanical defacement and corrosion having an external pressed and sintered component at least a part of which comprises TiN with Ti in combination with at least one material selected from the group consisting of Mn, Al, and V as metallic binders.
Inventors
- 👤 M Kasai
- 👤 M Kishida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:39
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/58; C04B35/58007; C04B35/58014; G; G04; G04B; G04B37/00; G04B37/22; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/927; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12139; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/24; Y10T428/24479; Y10T428/24521; Y10T428/24545; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
70 words
A WATCH CASE RESISTANT TO MECHANICAL DEFACEMENT AND CORROSIN, HAVING AN EXTERNAL PRESSED AND SINTERED COMPONENT COMPRISING TIN, TI AND AT LEAST ONE BINDER METAL SELECTED FROM THE GROUP CONSISTING OF MN, AL AND V, THE PERCENTAGE BY WEIGHT OF TIN BEING FROM 50 TO 95, OF MN BEING 0.5 TO 10, OF AL BEING 0.1 TO 8 AND OF V BEING 0.1 TO 10 WITH TI CONSTITUTING THE REMAINDER.
Claim 2
Dependent Claim
70 words
A WATCH CASE RESISTANT TO MECHANICAL DEFACEMENT AND CORROSIN, HAVING AN EXTERNAL PRESSED AND SINTERED COMPONENT COMPRISING TIN, TI AND AT LEAST ONE BINDER METAL SELECTED FROM THE GROUP CONSISTING OF MN, AL AND V, THE PERCENTAGE BY WEIGHT OF TIN BEING FROM 50 TO 95, OF MN BEING 0.5 TO 10, OF AL BEING 0.1 TO 8 AND OF V BEING 0.1 TO 10 WITH TI CONSTITUTING THE REMAINDER.
Claim 3
Dependent Claim
24 words
The watch case as defined in claim 1 wherein the percentages by weight of TiN, Ti, and Mn are respectively 87, 11 and 2.
Claim 4
Dependent Claim
26 words
The watch case as defined in claim 1 wherein the percentages by weight of TiN, Ti, Mn and Al are respectively 87, 11, 1 and 1.
Claim 5
Dependent Claim
26 words
The watch case as defined in claim 1 wherein the percentages by weight of TiN, Ti, Al and V are respectively 75, 10, 5 and 10.
Claim 6
Dependent Claim
28 words
The watch case as defined in claim 1 wherein the percentages by weight of TiN, Ti, Mn, Al and V are respectively 87, 9, 2, 1 and 1.
Claim 7
Dependent Claim
24 words
A watch case as defined in claim 1 having a stainless steel body covered at least in part by said pressed and sintered component.
Claim 8
Dependent Claim
20 words
A watch case as defined in claim 6 wherein said pressed and sintered component engages said stainless steel body mechanically.
Claim 9
Dependent Claim
23 words
A watch case as defined in claim 6 wherein said pressed and sintered component is attached to said stainless steel body by cement.
Claim 10
Dependent Claim
17 words
A watch case as defined in claim 6 wherein said pressed and sintered component is a bezel.
Claim 11
Dependent Claim
20 words
A watch case as defined in claim 1 wherein said pressed and sintered component comprises the entire watch case body.
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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |