Electrical resistors – Resistance value responsive to a condition – Gas – vapor – or moisture absorbing or collecting
Patent
1983-11-30
1985-04-02
Envall, Jr., Roy N.
Electrical resistors
Resistance value responsive to a condition
Gas, vapor, or moisture absorbing or collecting
733365, H01L 700
Patent
active
045090351
ABSTRACT:
A humidity-sensitive element which has excellent humidity-sensitive characteristics and has a small drift after being exposed to a high humidity for a long period of time. The humidity-sensitive element of the invention includes a porous metal oxide sintered body, a simple substance or an oxide of phosphorus or sulfur carried on the porous metal oxide sintered body, and copper ions carried on the porous metal oxide sintered body.
REFERENCES:
patent: 4052691 (1977-10-01), Nagano et al.
patent: 4343688 (1982-08-01), Harwood
patent: 4424508 (1984-01-01), Harata et al.
Harata Mituo
Hiraki Hideaki
Matsunaga Kiyosi
Sakuma Kazuo
Uno Shigeki
Envall Jr. Roy N.
Sears C. N.
Tokyo Shibaura Denki Kabushiki Kaisha
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