The main magnetic current total of four groups: the late 20th century, 30 the development of permanent magnet Alnico (AlNiCo); 50 in the early development of ferrite magnets; 60 late development of samarium cobalt magnet (SmCo), including the first generation of rare earth permanent magnet SmCo5 and second-generation rare earth permanent magnet Sm2Co17; 80 the early development of the third generation rare earth permanent magnet Nd Iron boron (Nd-FeB Magnet). In the fourth generation of rare-earth permanent magnet of the R & D, although the accession of nitride is placed in a very high expectations, but the practical effect, there are still a sizeable gap, but also from relevant breakthrough in time . In the market, the 20th century, 70 years before the magnet is the mainstay of the market aluminum nickel and cobalt, in the 20th century, 70 years Generation to 2000, with ferrite-based, from 2000 onwards, rare earth magnets (SmCo NdFeB +) value for the first time ultra - ferrite had become a magnet mainstay of the market. From the above description, we can see a new generation magnet
Well accepted by users, probably over a decade, where both technical and process issues, there are applications development and market development issues. Meanwhile, the generation of magnetic main markets, hold time is generally around three decades : Aluminum nickel and cobalt from the late 20th century, 30 to 1970, the ferrite from 1970 to 2000. For the Nd-Fe -Boron is concerned, first discovered in 1983, by virtue of its excellent performance in just five years to get the user recognition, and after 12 years occupied the main body of the market, we believe that the main market to maintain NdFeB Time will also be three decades or so.From the patent perspective, the general provisions of international patent protection period of 20 years, combined with the magnetic material material industries, especially NdFeB industry, we can see that 20 years is precisely the generation of magnets from invention to market-the main time. In other words, when the Nd-Fe when the basic patent expired, but also to go in this industry to the industry life cycle maturity. We also can see that the basic patent in the legal protection of NdFeB
Between the 20-year period, but also NdFeB own composition, preparation process and other process of gradual improvement, and when these also been applied for invention patents later, in a relatively full intellectual property protection areas, the pilot enterprises business (Xinfeng Magnet Industry CO.,Ltd) will be able to cure this legal first-mover advantage was maintained at 30 years .