Cleaning and liquid contact with solids – Processes – Carbon removal
Reexamination Certificate
2006-05-16
2006-05-16
Snay, Jeffrey (Department: 1743)
Cleaning and liquid contact with solids
Processes
Carbon removal
C134S040000, C134S042000
Reexamination Certificate
active
07045023
ABSTRACT:
Various rubbers, thermoplastic elastomers, and plastics can be cleaned with an acid (inorganic or organic) or a salt thereof to extend the useful life of the material. A desired end use for the material is a vehicle wiper blade. Alkyl or aromatic sulfonic acids are desired due to their ability to clean and regenerate a used wiper blade as well as to reduce streaking. Residual alkyl or aromatic sulfonic acid left on the blade can help to retard later build-up of oil and dirt on the blade.
REFERENCES:
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patent: 2622038 (1952-12-01), Charlesworth et al.
patent: 3345348 (1967-10-01), Tennehouse
patent: 3546825 (1970-12-01), Dale
patent: 3591410 (1971-07-01), Ross
patent: 3956174 (1976-05-01), Palcher
patent: 3978010 (1976-08-01), Bright et al.
patent: 3997935 (1976-12-01), Porter et al.
patent: 3998643 (1976-12-01), Liddle
Bandon Corporation
Hudak, Shunk & Farine Co. LPA
Snay Jeffrey
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