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Official data from INPI

PROCESSO PARA DESMETALIZAÇÃO DE UM PRODUTO OXO.

ConcedidaInvention Patent

Application data

Number

PI8006376

Type

Invention Patent

Filing

10/03/1980

Publication

06/15/1982

Progress at the INPI

  1. Filing10/03/80
  2. Publication06/15/82
  3. Examination07/17/84
  4. Allowance05/12/87
  5. Grant11/24/87
  6. Expired11/14/95

The letters patent expired on 11/14/1995: 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: 11/24/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Exxon Research And Egineering Company

US

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Inventors

E. P. (pessoa física)

L. I. (pessoa física)

S. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/24/1987

RPI 892

Notificação para pagamento de retribuição

#13.1

09/22/1987

RPI 883

Deferimento

#9.1

05/12/1987

RPI 864

Exigência - art. 36 da LPI

#6.1

03/25/1986

RPI 805

Exigência - art. 36 da LPI

#6.1

03/19/1985

RPI 752

Solicitação de exame técnico

#4.1

07/17/1984

RPI 717

Publicação do pedido de patente

#3.1

06/15/1982

RPI 608

Carta-patente expirada

#21.1

11/14/1995

RPI 1302

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