Metal treatment – Stock – Magnetic
Reexamination Certificate
2007-11-20
2007-11-20
Sheehan, John P. (Department: 1742)
Metal treatment
Stock
Magnetic
C148S301000, C148S101000
Reexamination Certificate
active
10745834
ABSTRACT:
An iron-based rare earth alloy magnet has a composition represented by the general formula: (Fe1-mTm)100-x-y-zQxRyMz, where T is at least one element selected from the group consisting of Co and Ni; Q is at least one element selected from the group consisting of B and C; R is at least one rare earth element substantially excluding La and Ce; and M is at least one metal element selected from the group consisting of Ti, Zr and Hf and always includes Ti. In this formula, the mole fractions x, y, z and m meet the inequalities of: 10 at %<x≦20 at %; 6 at %≦y<10 at %; 0.1 at %≦z≦12 at %; and 0≦m≦0.5, respectively.
REFERENCES:
patent: 4585473 (1986-04-01), Narasimhan et al.
patent: 4597938 (1986-07-01), Matsuura et al.
patent: 4664724 (1987-05-01), Mizoguchi et al.
patent: 4770723 (1988-09-01), Sagawa et al.
patent: 4836868 (1989-06-01), Yajima et al.
patent: 4845837 (1989-07-01), Lloyd
patent: 4851058 (1989-07-01), Croat
patent: 4935074 (1990-06-01), De Mooij et al.
patent: 4994109 (1991-02-01), Willman et al.
patent: 5022939 (1991-06-01), Yajima et al.
patent: 5049203 (1991-09-01), Mukai et al.
patent: 5049208 (1991-09-01), Yajima et al.
patent: 5190684 (1993-03-01), Yamashita et al.
patent: 5209789 (1993-05-01), Yoneyama et al.
patent: 5225004 (1993-07-01), O'Handley et al.
patent: 5230749 (1993-07-01), Fujimura et al.
patent: 5240513 (1993-08-01), McCallum et al.
patent: 5595608 (1997-01-01), Takebuchi et al.
patent: 5597425 (1997-01-01), Akioka et al.
patent: 5665177 (1997-09-01), Fukuno et al.
patent: 5666635 (1997-09-01), Kaneko et al.
patent: 5725792 (1998-03-01), Panchanathan
patent: 5834663 (1998-11-01), Fukuno et al.
patent: 5872501 (1999-02-01), Hamano et al.
patent: 5905424 (1999-05-01), Panchanathan
patent: 6022424 (2000-02-01), Sellers et al.
patent: 6172589 (2001-01-01), Fujita et al.
patent: 6183571 (2001-02-01), Inoue et al.
patent: 6183572 (2001-02-01), Panchanathan et al.
patent: 6280536 (2001-08-01), Inoue et al.
patent: 6302972 (2001-10-01), Hirosawa et al.
patent: 6332933 (2001-12-01), Ma et al.
patent: 6352599 (2002-03-01), Chang et al.
patent: 6386269 (2002-05-01), Kanekiyo et al.
patent: 6471786 (2002-10-01), Shigemoto et al.
patent: 6478889 (2002-11-01), Kanekiyo
patent: 6648984 (2003-11-01), Takaki et al.
patent: 6706124 (2004-03-01), Kanekiyo et al.
patent: 6790296 (2004-09-01), Kanekiyo et al.
patent: 6796363 (2004-09-01), Arai et al.
patent: 6814776 (2004-11-01), Kanekiyo et al.
patent: 6890392 (2005-05-01), Kanekiyo et al.
patent: 6951625 (2005-10-01), Arai et al.
patent: 2001/0015239 (2001-08-01), Kanekiyo
patent: 2002/0017339 (2002-02-01), Kanekiyo et al.
patent: 2002/0117235 (2002-08-01), Kanekiyo et al.
patent: 2003/0136468 (2003-07-01), Kanekiyo et al.
patent: 2004/0051614 (2004-03-01), Kanekiyo et al.
patent: 2004/0099346 (2004-05-01), Nishiuchi et al.
patent: 2004/0134567 (2004-07-01), Kanekiyo et al.
patent: 2004/0194856 (2004-10-01), Miyoshi et al.
patent: 2005/0040923 (2005-02-01), Miyoshi
patent: 197 39 959 (1998-03-01), None
patent: 0 197 712 (1986-10-01), None
patent: 0 302 395 (1989-02-01), None
patent: 0 529 148 (1993-03-01), None
patent: 0 632 471 (1995-01-01), None
patent: 0 874 375 (1998-10-01), None
patent: 0 959 478 (1999-11-01), None
patent: 1 018 751 (2000-07-01), None
patent: 1 061 532 (2000-12-01), None
patent: 1 158 545 (2001-11-01), None
patent: 1 371 434 (2003-12-01), None
patent: 1 207 537 (2004-03-01), None
patent: 199904 (1989-01-01), None
patent: 59-046008 (1984-03-01), None
patent: 60-9852 (1985-01-01), None
patent: 61-140350 (1986-06-01), None
patent: 62-062503 (1987-03-01), None
patent: 63-155601 (1988-06-01), None
patent: 63-190138 (1988-08-01), None
patent: 63-301505 (1988-12-01), None
patent: 64-000703 (1989-01-01), None
patent: 64-007501 (1989-01-01), None
patent: 64-081301 (1989-03-01), None
patent: 1-100242 (1989-04-01), None
patent: 01-162702 (1989-06-01), None
patent: 01-204401 (1989-08-01), None
patent: 02-247307 (1990-10-01), None
patent: 02-298003 (1990-12-01), None
patent: 03-260018 (1991-11-01), None
patent: 03-261104 (1991-11-01), None
patent: 03-264653 (1991-11-01), None
patent: 04-147604 (1992-05-01), None
patent: 05-269549 (1993-10-01), None
patent: 05-315174 (1993-11-01), None
patent: 06-140235 (1994-05-01), None
patent: 06-338407 (1994-12-01), None
patent: 06-32471 (1995-01-01), None
patent: 07-122412 (1995-05-01), None
patent: 07-226312 (1995-08-01), None
patent: 08-053710 (1996-02-01), None
patent: 08-124730 (1996-05-01), None
patent: 08-162312 (1996-06-01), None
patent: 8-167515 (1996-06-01), None
patent: 08-322175 (1996-12-01), None
patent: 09-155507 (1997-06-01), None
patent: 09-155513 (1997-06-01), None
patent: 10-53844 (1998-02-01), None
patent: 10-088294 (1998-04-01), None
patent: 10-282790 (1998-10-01), None
patent: 11-8109 (1999-01-01), None
patent: 64-007502 (1999-01-01), None
patent: 11-071646 (1999-03-01), None
patent: 11-101607 (1999-04-01), None
patent: 11-206075 (1999-07-01), None
patent: 11-323509 (1999-11-01), None
patent: 2000-079449 (2000-03-01), None
patent: 2000-079451 (2000-03-01), None
patent: 2000-234137 (2000-08-01), None
patent: 2000-235909 (2000-08-01), None
patent: 2000-348919 (2000-12-01), None
patent: 2001-244107 (2001-09-01), None
patent: 2002-64009 (2002-02-01), None
patent: 2002-80921 (2002-03-01), None
patent: 2002-175908 (2002-06-01), None
patent: 2002-212686 (2002-07-01), None
patent: 2002-239688 (2002-08-01), None
patent: 2002-302702 (2002-10-01), None
patent: 1998-16178 (1998-05-01), None
patent: 2 136 069 (1999-09-01), None
patent: 99/21196 (1999-04-01), None
patent: WO 00/03403 (2000-01-01), None
patent: WO 00/45397 (2000-08-01), None
patent: WO 00/52713 (2000-09-01), None
patent: WO 00/52715 (2000-09-01), None
patent: WO 01/68297 (2001-09-01), None
patent: WO 02/067275 (2002-08-01), None
patent: WO 02/093591 (2002-11-01), None
US 4,756,775, 07/1988, Croat (withdrawn)
Merkulova et al., “The Temperature Dependence of Coercivity in Nancrystallyne Nd-Fe-B-(TiC) Magnets”, Journal of Applied Physics, vol. 87, No. 9, (2000), pp. 4738-4740.
Chang et al., “High Performance α-Fe/R2Fe14B-Type Nanocomposites with Nominal Compositions of (Nd,La)9.5Fe78 XCoxCr2B10.5”, Journal of Magnetism and Magnetic Materials, vol. 189, No. 1 (1998), pp. 55-61.
Coehoorn et al., “Novel Permanent Magnetic Materials Made by Rapid Quenching”, pp. 669-670, Dec. 1988, Journal de Physique.
Chang et al., The Effects of Refractory Metals on the Magnetic Properties of a-Fe/R2Fe14B-Type Nanocomposites:, pp. 3265-3267, Sep. 1999, IEEE Transactions on Magnetics, vol. 35, No. 5.
Chang et al., “Magnetic and Microstructure Studies of Boron-Enriched . . . Melt-Spun Ribbons”, pp. 3312-3314, Sep. 2000, IEEE Transactions on Magnetics, vol. 36, No. 5.
Chang et al., “High Performance . . . Nanocomposites”, pp. 121-123, Jan. 1998, Applied Physics Letters, vol. 72, No. 1.
Chang et al., “The Effect of Boron and Rare Earth Contents on the Magnetic Properties of La and Cr Substitued . . . Nanocomposites”, pp. 6271-6273, Jun. 1998, Journal of Applied Physics, vol. 83, No. 8.
Chiriac et al., “ND Fe Co HF B Strip Cast Alloy”, pp. 5338-5340, May 2000, Journal of Applied Physics, vol. 87, No. 9.
Chang et al., “The Effect of La-Substitution on the Microstructure and Magnetic Properties of Nanocomposite NdFeB Melt Spun Ribbons”, pp. 65-70, Mar. 1997, Journal of Magnetism and Magnetic Materials, vol. 167, Nos. 1-2.
Chen et al., A Study on the Phase Transformation and Exchange-Coupling of . . . Nanocomposites:, pp. 209-219, Symposium held Apr. 4-5, 1999, Advanced Hard and Soft Magnetic Materials, Materials Research Society, Symposium Proceedings vol. 577.
Specification and Drawings for U.S. Appl. No. 09/455,469, “Nanocomposite Magnet Material and Method for Producing Nanocomposite Magnet”, filed Dec. 6, 1999, Inventors: Satoshi Hirosawa et al.
Bernardi et al., “Microstructural Analysis of Strip Cast Nd-Fe-B Alloys for High (BH) max Ma
Hirosawa Satoshi
Kanekiyo Hirokazu
Miyoshi Toshio
Shigemoto Yasutaka
Shioya Yusuke
Keating & Bennett LLP
Neomax Co. Ltd.
Sheehan John P.
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