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Official data from INPI

PROCESSO PARA A PURIFICAÇÃO DE UMA CORRENTE DE GÁS INDUSTRIAL

ConcedidaInvention Patent

Application data

Number

PI8002952

Type

Invention Patent

Filing

05/13/1980

Publication

-

Progress at the INPI

  1. Filing05/13/80
  2. Publication
  3. Examination05/25/82
  4. Allowance08/06/85
  5. Grant03/25/86
  6. Expired06/13/95

The letters patent expired on 06/13/1995: 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: 03/25/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

U. C. (pessoa física)

US

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Inventors

A. M. (pessoa física)

US

G. I. (pessoa física)

US

R. J. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

038.736 · 05/14/1979

US

089.316 · 10/30/1979

US

141.141 · 04/17/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/25/1986

RPI 805

Notificação para pagamento de retribuição

#13.1

12/10/1985

RPI 790

Deferimento

#9.1

08/06/1985

RPI 772

Exigência - art. 36 da LPI

#6.1

05/22/1984

RPI 709

Exigência - art. 36 da LPI

#6.1

12/06/1983

RPI 685

6.2

12/07/1982

RPI 633

Solicitação de exame técnico

#4.1

05/25/1982

RPI 605

Carta-patente expirada

#21.1

06/13/1995

RPI 1280

20.4

10/15/1991

RPI 1089

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