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Official data from INPI

MEMBRANA DE SEPARAÇÃO DE GÁS E PROCESSO PARA SEPARAÇÃO DE UM COMPONENTE A PARTIR DE UMA MISTURA GASOSA DE O2/N2, CO2/CH4 OU HE/CH4

ArquivadaInvention Patent

Application data

Number

PI8906777

Type

Invention Patent

Filing

12/27/1989

Publication

09/18/1990

Progress at the INPI

  1. Filing12/27/89
  2. Publication09/18/90
  3. Abandoned07/13/93
  4. Allowance
  5. Grant
  6. In force

The application was abandoned: the INPI technical office action was not answered in time (art. 36 of the Brazilian IP Act). The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 12/15/1998. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Praxair Technology, Inc.

US

See this company's full portfolio

Inventors

G. B. (pessoa física)

US

J. K. (pessoa física)

US

N. M. (pessoa física)

Technical data

IPC Classification

Priority claims

US

289.668 · 12/27/1988

US

358.631 · 05/03/1989

US

443.208 · 12/06/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 36 §1° da LPI

#11.2

12/15/1998

RPI 1458

Exigência - art. 36 da LPI

#6.1

05/12/1998

RPI 1429

4.1.2

10/05/1993

RPI 1192

11.8

07/13/1993

RPI 1180

Solicitação de exame técnico

#4.1

07/13/1993

RPI 1180

14.4

06/22/1993

RPI 1177

14.7

06/22/1993

RPI 1177

Arquivamento - Art. 36 §1° da LPI

#11.2

05/25/1993

RPI 1173

Solicitação de exame não realizada

#4.2

12/01/1992

RPI 1148

Publicação do pedido de patente

#3.1

09/18/1990

RPI 1033

Pedido de patente depositado

#2.1

05/01/1990

RPI 1016

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