U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Quotables

"I hate what they've done to my child...I would never let my own children watch it. "

Vladimir Zworykin, television pioneer ; Talking about an invention in which he played a critical role.

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 148/618 - With spheroidal graphite production


Subclass of Class 148 - Metal treatment
Definition: Process for producing a malleable cast iron product, also
No. of patents: 5
Last issue date: 04/20/2004


NumberTitleIssue Date
6723186Method of manufacturing metallic film consisting of giant single crystal grains
A method of manufacturing a metallic film consisting of giant single crystal grains is disclosed. The method includes depositing the metallic film on a substrate under an atmosphere of an inert gas and a specified additive gas to change a surface energy, grain bound...
04/20/2004
6024804Method of preparing high nodule malleable iron and its named product
The invention is a malleable iron comprising about 250 to 400 nodules of graphite per square millimeter as observed in a photomicrograph at 100×, and a Brinell hardness of about 195 to 550 BHN. Preferably, the malleable iron further comprises sulfur and ...
02/15/2000
5876523Method of producing spheroidal graphite cast iron article
A method of producing a spheroidal graphite cast iron article containing at least one pearlite stabilizing element selected from the group consisting of Mn, Cu, Sn, Sb and Pb and having a double layer structure which comprises a surface layer portion and ...
03/02/1999
4619713Method of producing nodular graphite cast iron
A method of producing a nodular graphite cast iron having high strength and toughness in shorter time and with reduced production cost. The method comprises the following steps: rapidly cooling the casting, which has been removed from the mold at a predet...
10/28/1986
4099994High duty ductile case iron and its heat treatment method
A ductile cast iron having a high tensile strength as well as a high elongation due to its matrix structure of finely mixed ferrite and pearlite grains obtained by the heat treatment. The material is pearlitic ductile cast iron and may be of ordinary duct...
07/11/1978
 
Sign InRegister
Username  
Password   
forgot password?