The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 04, 2000
Filed:
Oct. 26, 1998
Suraj Puri, Los Altos, CA (US);
Raj Mohindra, Los Altos Hills, CA (US);
SCD Mountain View, Inc., Mountain View, CA (US);
Abstract
A method for cleaning an object. The method (400) includes immersing (420) an object in a liquid comprising water, which can be ultra-clean. The object has a front face, a back face, and an edge. The method includes providing (450) a cleaning enhancement substance (e.g., trace amount of polar organic compound, surfactant, ammonia bearing compound) into the liquid. In one embodiment, the cleaning enhancement substance can form a liquid film, such as a monolayer overlying an upper surface or level of the liquid. The method also includes providing a substantially particle free environment (e.g., ultra-clean gas, ultra-clean non-reactive gas) adjacent to the front face and the back face of the object as the liquid including the cleaning enhancement substance is being removed.