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

Patent Owner(s)

Patent Owner	Address
FIBROCEL PRODUTOS BIOTECNOLOGICOS LTDA	AV CANDIDO DE ABREU 427 CONJ 301 80530-903 CURITIBA PARANA

International Classification(s)

• C12R:INDEXING SCHEME ASSOCIATED WITH SUBCLASSES C12C-C1....
• A61K:PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOS....
• C12P:FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESI....
• C08B:POLYSACCHARIDES; DERIVATIVES THEREOF

• 1986 Application Filing Year
• C12R Class
• 95 Applications Filed
• 0 Patents Issued To-Date
• 0 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Farah, Luiz F X	Curitiba, BR	1	18
# of filed Patents : 1 Total Citations : 18

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Patent Citation Ranking

• 18 Citation Count
• C12R Class

• 0 % this patent is cited more than
• 35 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: 4912049

Process for the preparation of cellulose film, cellulose film produced thereby, artificial skin graft and its use

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Abstract

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There is described a process for the preparation of cellulose film, comprising the steps of preparing a culture medium having as nutrients sources of nitrogen and of carbohydrate, seeding this medium with a culture of acetobacter, species Xylinium; incubating the culture at temperatures which permit bacterial activity for a time suitable to the final intended use of the film, and removing the formed film from the culture medium for dehydration in a distended state. The film thus prepared is suitable for use as an artificial skin graft, a separating membrane, or artificial leather.

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Description

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Claims

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Claims data not available

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Legal Events

 

• AS2005
• AS2003
• FPAY2001
• FPAY1997
• FPAY1993
• I1990
• STCF1990
• AS1988
• F1986
• PD1984

Date	Code	Event	Description
Apr 19, 2005	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BIO-FILL PRODUTOS BIOTECNOLOGICOS S.A.;REEL/FRAME:016651/0900 Owner name: FIBROCEL PRODUTOS BIOTECNOLOGICOS LTDA., BRAZIL Effective Date: Apr 19, 2005
Aug 26, 2003	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BIO-FILL PRODUTOS BIOTECNOLOGICOS S.A.;REEL/FRAME:015156/0117 Owner name: FIBROCEL PRODUTOS BIOTECNOLOGICOS LTDA., BRAZIL Effective Date: Aug 26, 2003
Sep 13, 2001	FPAY	FEE PAYMENT	year of fee payment: 12
Sep 10, 1997	FPAY	FEE PAYMENT	year of fee payment: 8
Jul 27, 1993	FPAY	FEE PAYMENT	year of fee payment: 4
Mar 27, 1990	I	Issuance
Jan 24, 1990	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
Feb 22, 1988	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:FARAH, LUIZ F. X.;REEL/FRAME:004847/0514 Owner name: BIO FILL PRODUTOS BIOTECHNOLOGICOS S.A., RUA ALBIN Effective Date: Feb 22, 1988 free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FARAH, LUIZ F. X.;REEL/FRAME:004847/0514 Owner name: BIO FILL PRODUTOS BIOTECHNOLOGICOS S.A.,BRAZIL Effective Date: Feb 22, 1988
Jun 10, 1986	F	Filing
Oct 01, 1984	PD	Priority Date