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

Patent Owner(s)

• CANON KABUSHIKI KAISHA

International Classification(s)

• C03C:CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREO....
• B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Kotani, Yoshinori	Yokohama, JP	63	247
Sugiyama, Akira	Yokohama, JP	200	3198
Takashima, Kenji	Tokyo, JP	75	477
Zhang, Zuyi	Yokohama, JP	49	298

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Sep 30, 2026

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge - 11.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
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

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
March 31, 2015	US,8993107,B2   US8993107B2	GRANTED PATENT AS SECOND PUBLICATION
June 20, 2013	US,20130157026,A1   US20130157026A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8993107

Porous glass and optical member

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