US4374903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal coatings or metal sandwiches with boron nitride or titanium diboride substrates
Assignee: KBK FINANCIAL INC
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Filing: 1981-05-28
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Granted: 1983-02-22
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Expires: 2001-05-28
Abstract
Abstract Substrates such as boron nitride and titanium diboride and the like joined to other metal or metal sandwiches useful as resistance elements.
Inventors
- 👤 Josef Intrater
- 👤 Gene Bertoldo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:33
CPC Classifications
C; C04; C04B; C04B37/00; C04B37/003; C04B37/006; C04B41/00; C04B41/45; C04B41/50; C04B41/51; C04B41/80; C04B41/81; C04B41/85; C04B41/88; C22; C22C; C22C13/00; C23; C23C; C23C26/00; C23C26/02; C04B2237/00; C04B2237/02; C04B2237/12; C04B2237/122; C04B2237/123; C04B2237/124; C04B2237/126; C04B2237/127; C04B2237/30; C04B2237/32; C04B2237/36; C04B2237/361; C04B2237/363; C04B2237/50; C04B2237/60; C04B2237/72; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12576; Y10T428/12681; Y10T428/12708; Y10T428/12715; Y10T428/12771; Y10T428/12861; Y10T428/12903; Y10T428/1291; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
48 words
A composite of tin, lead, indium, a tin alloy, a lead alloy or an indium alloy as component in a combination with a carbide or carbonyl former, as an adherent coating, film or layer on a base or substrate of boron nitride or titanium diboride, or mixtures thereof.
Claim 2
Dependent Claim
48 words
A composite of tin, lead, indium, a tin alloy, a lead alloy or an indium alloy as component in a combination with a carbide or carbonyl former, as an adherent coating, film or layer on a base or substrate of boron nitride or titanium diboride, or mixtures thereof.
Claim 3
Dependent Claim
37 words
The composite as defined in claim 1, wherein the carbide or carbonyl former is chromium, titanium, hafnium, zirconium, cobalt, iron, nickel, manganese, rhenium, ruthenium, rhodium, osmium, iridium, vanadium, niobium, tantalum, tungsten or molybdenum, or mixtures of same.
Claim 4
Dependent Claim
30 words
The composite as defined in claim 2, wherein the adherent coating film or layer is further overlaid with an adherent, copper, nickel, molybdenum or a sandwich layer of these metals.
Claim 5
Dependent Claim
16 words
The composite as defined in claim 3, wherein the adherent overlaid layer is a nickel-copper-nickel composite.
Claim 6
Dependent Claim
19 words
The composite as defined in claim 1, wherein the substrate is a mixture of boron nitride and titanium diboride.
Claim 7
Dependent Claim
13 words
The composite as defined in claim 1, wherein the substrate is boron nitride.
Claim 8
Dependent Claim
13 words
The composite as defined in claim 1, wherein the substrate is titanium diboride.
Claim 9
Dependent Claim
23 words
The composite as defined in claim 1, wherein tin is in combination with chromium as an adherent with coating on boron nitride substrate.
Claim 10
Dependent Claim
26 words
The composite as defined in claim 1, wherein the substrates is a mixture of boron nitride and titanium diboride in a ratio of 1:1 by weight.
Claim 11
Dependent Claim
16 words
The composite as defined in claim 4, wherein the overlaid layer is on a graphite substrate.
References Cited (Backward Citations)
US3097965A
Cited
US3860443A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-02-21 | 1986-08-23 | 1987-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-21 | 1990-08-23 | 1991-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-21 | 1994-08-23 | 1995-02-22 | $7700.00 | Window Closed / Lapsed |