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

Patent Owner(s)

Patent Owner	Address
SOCIETE PROLABO	75011 PARIS

International Classification(s)

• B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Charmot, Dominique	Paris, FR	162	2524
# of filed Patents : 162 Total Citations : 2524

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Patent Citation Ranking

• 8 Citation Count
• B32B Class

• 0 % this patent is cited more than
• 33 Age

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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: 5128204

Magnetizable microspheres based on a polysilsesquioxane and a process for their preparation

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Abstract

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Magnetizable microspheres comprising a polysilsesquioxane network and, distributed within the network, a magnetizable filler chemically bonded to polysilsesquioxane units. The magnetizable microspheres are prepared by dispersing an aqueous suspension of a magnetizable filler, not coated with a dispersing agent, in a solvent, dissolving an alkoxysilane or an alkoxysiloxane in the organic phase, polycondensating to a polysilsesquioxane, removing water, separating, and optionally redispersing the microspheres in water.

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Description

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