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Official data from INPI

PROCESSO PARA OPERACAO DE INSTALACAO DE ADSORCAO DE PRESSAO VARIAVEL,DE FUNCIONAMENTO CICLICO

ConcedidaInvention Patent

Application data

Number

PI7907657

Type

Invention Patent

Filing

11/30/1978

Publication

-

Progress at the INPI

  1. Filing11/30/78
  2. Publication
  3. Examination08/09/83
  4. Allowance01/29/85
  5. Grant07/30/85
  6. Expired05/02/95

The letters patent expired on 05/02/1995: 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: 07/30/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

LINDE AG [DE]

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Inventors

A. S. (pessoa física)

B. C. (pessoa física)

L. P. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/30/1985

RPI 771

Notificação para pagamento de retribuição

#13.1

05/21/1985

RPI 761

Deferimento

#9.1

01/29/1985

RPI 745

Exigência - art. 36 da LPI

#6.1

07/03/1984

RPI 715

Solicitação de exame técnico

#4.1

08/09/1983

RPI 668

14.1

10/13/1982

RPI 625

Carta-patente expirada

#21.1

05/02/1995

RPI 1274

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