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• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
SHIDA KEIZO (45%)	3-38-27 SHOWAMACHI MAEBASHI-SHI GUNMA-KEN
TAKEDA CHEMICAL INDUSTRIES LTD (10%)	27 DOSHOMACHI 2-CHOME HIGASHI-KU OSAKA
JAPAN ATOMIC ENERGY RESEARCH INSTITUTE (45%)	2-2 UCHISAIWAI-CHO 2-CHOME CHIYODA-KU TOKYO

International Classification(s)

• A61K:PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOS....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Asano, Masaharu	Gunma, JP	63	673
Kaetsu, Isao	Gunma, JP	23	607
Nakai, Katsuyuki	Gunma, JP	13	64
Shida, Keizo	Gunma, JP	3	15
Shiraishi, Akira	Tokyo, JP	12	264
Yamanaka, Hidetoshi	Gunma, JP	6	63
Yoshida, Masaru	Gunma, JP	179	2948

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge after expiration - Late payment is unavoidable	$700.00	$350.00	$175.00
Surcharge after expiration - Late payment is unintentional	$1,640.00	$820.00	$410.00

Full Text

US Patent No: 4652443

Slow-release composite and process for producing the same

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