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Official data from INPI

COMPOSIÇÃO TERMOPLASTICA E PROCESSO PARA SUA PREPARAÇÃO

PublicadaInvention Patent

Application data

Number

PI8703432

Type

Invention Patent

Filing

07/06/1987

Publication

03/22/1988

Progress at the INPI

  1. Filing07/06/87
  2. Publication03/22/88
  3. Examination09/18/90
  4. Allowance05/23/95
  5. Grant10/31/95
  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: 03/22/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappij B.V

NL

See this company's full portfolio

Inventors

A. S. (pessoa física)

US

G. H. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

882987 · 07/07/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

03/22/1988

RPI 909

Pedido de patente depositado

#2.1

09/01/1987

RPI 880

Carta-patente expirada

#21.1

Patente extinta em 06/07/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

10/31/1995

RPI 1300

Deferimento

#9.1

05/23/1995

RPI 1277

Exigência - art. 36 da LPI

#6.1

10/13/1992

RPI 1141

Exigência - art. 36 da LPI

#6.1

01/14/1992

RPI 1102

Solicitação de exame técnico

#4.1

09/18/1990

RPI 1033

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