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Official data from INPI

PROCESSO PARA A SEPARAÇÃO CRIOGÊNICA DE AR PARA A PRODUÇÃO DE NITROGÊNIO À PRESSÃO ELEVADA E OXIGÊNIO.

ArquivadaInvention PatentPCT · US1991002131

Application data

Number

PI9105677

Type

Invention Patent

Filing

04/03/1991

Publication

08/04/1992

PCT

US1991002131

Progress at the INPI

  1. Filing04/03/91
  2. Publication08/04/92
  3. Examination06/01/93
  4. Allowance12/19/95
  5. Abandoned
  6. In force

The application was allowed on 12/19/1995 but abandoned for failure to pay the grant fee (art. 38 of the Brazilian IP Act). The letters patent were never issued.

Talk to a specialist

Latest action published by the INPI: 01/27/1998. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Praxair Technology, Inc.

US

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Inventors

H. C. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

504.630 · 04/03/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 38 §2° da LPI

#11.4

01/27/1998

RPI 1414

Notificação para pagamento de retribuição

#13.1

03/25/1997

RPI 1373

9.1.3

08/13/1996

RPI 1341

Deferimento

#9.1

12/19/1995

RPI 1307

14.4

06/08/1993

RPI 1175

14.7

06/08/1993

RPI 1175

14.7

06/01/1993

RPI 1174

Solicitação de exame técnico

#4.1

06/01/1993

RPI 1174

Notificação de entrada na fase nacional - PCT

#1.3

08/04/1992

RPI 1131

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