Hydrophilic foam article and surface-cleaning method for clean room
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 21, 1999
Issued Date -
N/A
app pub date -
Apr 29, 1997
filing date -
Jan 27, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A novel method and a novel article are disclosed for cleaning a metal, glass, or plastic surface without scratching or scoring the surface. The novel method comprises wiping the surface with the novel article, which is made from an open cell, hydrophilic, static-dissipative, polyurethane foam, and which is laundered so that the article in deionized water releases fewer than 36.0.times.10.sup.6 per square meter of apparent surface area of the article for particles of a size greater than about 0.5 .mu.m and fewer than about 2.5 parts per million of chloride, fluoride, sodium, sulfate, sulfite, or silicon ions. The novel article may be a wiper, a sponge, a roller, a swab mounted on a handle, or a plug having a generally cylindrical shape when unstressed and having particular utility where the surface is the interior surface of a metal, glass, or plastic tube. The plug is propelled through the tube, as by means of compressed air. The novel method also may comprise washing the surface with deionized water.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully