发明授权
- 专利标题： Reduced pressure device and method of making
- 专利标题（中）： 减压装置及制作方法
-
申请号： US85238申请日： 1998-05-27
-
公开(公告)号： US5989722A公开(公告)日： 1999-11-23
- 发明人: Tadahiro Ohmi , Masaru Umeda
- 申请人： Tadahiro Ohmi , Masaru Umeda
- 专利权人： Ohmi; Tadahiro,Umeda; Masaru
- 当前专利权人： Ohmi; Tadahiro,Umeda; Masaru
- 主分类号： C23C8/14
- IPC分类号： C23C8/14 ; C23C14/35 ; C23C14/56 ; C23C16/44 ; H01J37/32 ; B32B9/00
摘要：
A reduced pressure device the reduced pressure chamber of which is constructed of stainless steel, and includes a passivation film formed on the exposed interior surface thereof. The film has a thickness more than 50 .ANG. and is composed of two or more layers. One layer contains mainly chrome oxide formed in the vicinity of the interface of the stainless steel and the passivation film. The other layer contains mainly iron oxide formed in the vicinity of the surface of the passivation film. A passivation film may also be used with a thickness of more than 50 .ANG. and containing mainly a mixture of the chrome oxide and the iron oxide. Lastly a passivation film may also be used with thickness of more than 50 .ANG. and containing mainly chrome oxide.
公开/授权文献
- USD406555S Wind deflector set for a truck hood and side window 公开/授权日：1999-03-09
信息查询
IPC分类:
