Patent for Sale:

Making Cubic Boron Nitride/Diamond Composite Layer    

A technique for synthesizing a composite films with cubic boron nitride on top and diamond beneath.


Enables synthesis of a cubic boron nitride/diamond composite layer on a variety of substrates such as metals, alloys and semiconductor materials by first depositing diamond directly on the said substrates and then growing cubic boron nitride directly on diamond.

Making the composite layer without using turbostratic boron nitride, insensitive to humidity and growing in epitaxial, resulting in high film adherence.

Primary Application of the Technology

Coating tools used in high temperature and high frequency electronic and mechanical devices.

Patent Summary

U.S. Patent Classes & Classifications Covered in this listing:

Class 428: Stock Material Or Miscellaneous Articles

This is the residual class for: 1. Stock material in the form of a structurally defined web, sheet, rod, strand, fiber, filament, cell, flake, particle not provided elsewhere. 2. Stock material in the form of a web, sheet, mass or layer which consists of or contains a structurally defined constituent or element. 3. A nonstructural laminate defined merely in terms of the composition of one or more layers. 4. An article of manufacture or an intermediate-article not provided for elsewhere. 5. A process for applying an impregnating material to a naturally solid product such as a wood beam, a sheet of leather or a stone, or for applying a coating to a base, and which process includes no significant method step.

Subclass 216: No layer or component greater than 5 mils thick
Subclass 336: 1 mil or less
Subclass 704: Of B, N, P, S, or metal-containing material