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Official data from INPI

PROCESSO DE POLIMERIZAÇÃO PARA PRODUÇÃO DE UM POLÍMERO À BASE DE MONOARILCICLOBUTENO.

Em AnáliseInvention Patent

Application data

Number

PI8706038

Type

Invention Patent

Filing

02/27/1987

Publication

04/05/1988

Progress at the INPI

  1. Filing02/27/87
  2. Publication04/05/88
  3. Examination06/21/88
  4. Allowance04/27/93
  5. Grant11/30/93
  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: 06/21/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Dow Chemical Company

US

See this company's full portfolio

Inventors

A. S. (pessoa física)

US

R. K. (pessoa física)

US

S. H. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

835.013 · 02/28/1986

US

872.372 · 06/09/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

06/21/1988

RPI 922

Notificação de entrada na fase nacional - PCT

#1.3

04/05/1988

RPI 911

Carta-patente expirada

#21.1

Patente extinta em 27/02/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

11/30/1993

RPI 1200

9.1.3

06/29/1993

RPI 1178

Deferimento

#9.1

04/27/1993

RPI 1169

Exigência - art. 36 da LPI

#6.1

02/25/1992

RPI 1108

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