JPS5413818A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Electromagnetic changeover valve for internal combustion engine exhaust gas purifier
Assignee: Aisan Industry Co Ltd
•
Filing: 1977-07-05
•
Granted: —
•
Expires: 1997-07-05
Abstract
Abstract PURPOSE: To simplify the structure of piping, by providing in a main body of an electromagnetic changeover valve orifices for controlling the speed of introduction of negative pressure and atmospheric pressure into a negative pressure chamber. COPYRIGHT: (C)1979,JPO&Japio
Inventors
- 👤 Minoru Iwata
- 👤 Takeshi Yasuda
- 👤 Shoichi Hagiwara
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-11-04 05:24
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/18; F01N3/22; F01N3/222; F01N3/227; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.