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Official data from INPI

MEMBRANA MULTI-COMPONENTE PARA A PREPARAÇÃO DE GASES, PROCESSO PARA SEPARAÇÃO DE PELO MENOS UM GÁS EM UMA MISTURA GASOSA DE PELO MENOS OUTRO GÁS, E APARELHO PARA USO NO MESMO

ConcedidaInvention Patent

Application data

Number

PI7707583

Type

Invention Patent

Filing

11/11/1977

Publication

-

Progress at the INPI

  1. Filing11/11/77
  2. Publication
  3. Examination
  4. Allowance09/27/83
  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.

Talk to a specialist

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

Applicants and inventors

Applicants

Monsanto Company

US

See this company's full portfolio

Inventors

J. H. (pessoa física)

M. T. (pessoa física)

Technical data

IPC Classification

Priority claims

US

742.159 · 11/15/1976

US

832.481 · 09/13/1977

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

01/17/1984

RPI 691

Deferimento

#9.1

09/27/1983

RPI 675

15.0

02/09/1982

RPI 590

Exigência - art. 36 da LPI

#6.1

01/19/1982

RPI 587

Carta-patente expirada

#21.1

07/20/1993

RPI 1181

Pedido de licença compulsória

#20.1

10/20/1992

RPI 1142

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