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Official data from INPI

PROCESSO APERFEIÇOADO, DE DOIS ESTÁGIOS, PARA PRODUÇÃO DE ÁCIDO ACRÍLICO

PublicadaInvention Patent

Application data

Number

PI8706723

Type

Invention Patent

Filing

12/11/1987

Publication

07/11/1989

Progress at the INPI

  1. Filing12/11/87
  2. Publication07/11/89
  3. Examination08/14/90
  4. Allowance08/01/95
  5. Grant03/26/96
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 07/11/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

M. C. (pessoa física)

JP

Mitsubishi Petrochemical Company Limited

JP

See this company's full portfolio

Inventors

K. S. (pessoa física)

JP

T. S. (pessoa física)

JP

Technical data

Priority claims

JP

295216/86 · 12/11/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

07/11/1989

RPI 977

Pedido de patente depositado

#2.1

03/29/1988

RPI 910

Carta-patente expirada

#21.1

Patente extinta em 11/12/2002

07/29/2008

RPI 1960

Transferência deferida

#25.1

Transferido por fusão de: Mitsubishi Petrochemical Company Limited

11/24/1998

RPI 1455

Concessão da patente

#16.1

03/26/1996

RPI 1321

Deferimento

#9.1

08/01/1995

RPI 1287

Solicitação de exame técnico

#4.1

08/14/1990

RPI 1028

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