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Official data from INPI

PROCESSO E SISTEMA DE ADSORÇÃO POR OSCILAÇÃO DE PRESSÃO APERFEIÇOADOS PARA RECUPERAÇÃO DO COMPONENTE MAIS PRONTAMENTE ADSORVÍVEL DE UMA MISTURA DE GASES DE ALIMENTAÇÃO

PublicadaInvention Patent

Application data

Number

PI8806969

Type

Invention Patent

Filing

12/29/1988

Publication

09/05/1989

Progress at the INPI

Under appeal
  1. Filing12/29/88
  2. Publication09/05/89
  3. Examination02/19/91
  4. Refused01/28/97
  5. Grant
  6. In force

The application was refused by the INPI on 01/28/1997. The invention was never patented.

Talk to a specialist

Latest action published by the INPI: 09/05/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Praxair Technology, Inc.

US

U. C. (pessoa física)

US

See this company's full portfolio

Inventors

D. L. (pessoa física)

US

F. L. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

139.207 · 12/29/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

09/05/1989

RPI 985

Pedido de patente depositado

#2.1

05/02/1989

RPI 967

Indeferimento

#9.2

01/28/1997

RPI 1365

Conhecimento de parecer técnico

#7.1

01/30/1996

RPI 1313

14.1

11/01/1994

RPI 1248

14.4

10/25/1994

RPI 1247

Solicitação de exame técnico

#4.1

02/19/1991

RPI 1055

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