Powder Metallurgy Processes Patents (Class 419)
- Making porous product (Class 419/2)
- Making articles of indefinite length (Class 419/3)
- Making composite or hollow article (Class 419/5)
- Metal and nonmetal in final product (Class 419/10)
- Powder shape or size characteristics (Class 419/23)
- Controlled cooling after sintering (Class 419/25)
- Post sintering operation (Class 419/26)
- Powder pretreatment (prior to consolidation or sintering) (Class 419/30)
- Consolidation of powder prior to sintering (Class 419/38)
- Pretreatment of consolidated powders (Class 419/44)
- Sintering which includes a chemical reaction (Class 419/45)
- Alloying occurs during sintering (Class 419/46)
- Liquid phase sintering (Class 419/47)
- Heat and pressure simultaneously to effect sintering (Class 419/48)
- Plural heating steps including sintering (Class 419/53)
- Special medium during sintering (Class 419/56)
