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Official data from INPI

PROCESSO PARA A PRODUCAO DE UM CALDO DE FERMENTACAO CONTENDO UM COLOIDE DE XANTHOMONAS;PROCESSO PARA A RECUPERACAO DE OLEO CRU DE UMA FORMACAO SUBTERRANEA;E PROCESSO PARA PREPARAR UM COLOIDE HIDROFILICO

ConcedidaInvention Patent

Application data

Number

PI7705160

Type

Invention Patent

Filing

08/05/1976

Publication

-

Progress at the INPI

  1. Filing08/05/76
  2. Publication
  3. Examination
  4. Allowance03/17/87
  5. Grant09/29/87
  6. Expired09/21/93

The letters patent expired on 09/21/1993: 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: 09/29/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PFIZER

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Inventors

W. W. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/29/1987

RPI 884

Notificação para pagamento de retribuição

#13.1

07/14/1987

RPI 873

Deferimento

#9.1

03/17/1987

RPI 856

Exigência - art. 36 da LPI

#6.1

10/05/1982

RPI 624

15.0

01/12/1982

RPI 586

Exigência - art. 36 da LPI

#6.1

12/08/1981

RPI 581

Carta-patente expirada

#21.1

09/21/1993

RPI 1190

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