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Official data from INPI

MATERIAL DE CARATER CATIONICO,CAPAZ DE FIXAR DE MODO REVERSIVEL MACROMOLECULAS BIOLOGICAS,PROCESSOS PARA SUA PREPARACAO E SUAS APLICACOES

ConcedidaInvention Patent
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Application data

Number

PI7604920

Type

Invention Patent

Filing

07/29/1975

Publication

-
View on INPI

Progress at the INPI

  1. Filing07/29/75
  2. Publication
  3. Examination
  4. Allowance09/06/83
  5. Grant03/27/84
  6. Expired07/20/93

The letters patent expired on 07/20/1993: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 03/27/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

M. I. (pessoa física)

Inventors

T. M. (pessoa física)

T. J. (pessoa física)

Technical data

IPC Classification

B01D 15/08B01J 41/16C07K 1/00C07K 1/18C07K 14/435C07K 14/76C07K 14/765C07K 16/00C07K 16/06C07K 17/00C07K 17/14C08B 37/00C08J 5/20C08K 13/00C08K 13/02C08K 3/00C08K 3/36C08K 5/00C08K 5/06C08K 5/1515C08K 5/16C08L 1/00C08L 1/26C08L 3/00C08L 5/00C08L 5/12C12N 11/00C12N 11/10C12N 11/14G01N 30/00G01N 30/88

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/27/1984

RPI 701

Notificação para pagamento de retribuição

#13.1

12/27/1983

RPI 688

133

10/25/1983

RPI 679

100

09/06/1983

RPI 672

120

02/16/1983

RPI 643

Petição de recurso

#12.2

08/31/1982

RPI 619

Indeferimento

#9.2

05/18/1982

RPI 604

Carta-patente expirada

#21.1

07/20/1993

RPI 1181

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