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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE UMA RESINA TERMOPLÁSTICA

PublicadaInvention Patent

Application data

Number

PI8800922

Type

Invention Patent

Filing

03/03/1988

Publication

10/11/1988

Progress at the INPI

  1. Filing03/03/88
  2. Publication10/11/88
  3. Examination12/18/90
  4. Allowance06/06/95
  5. Grant04/30/96
  6. Expired09/02/08

The letters patent expired on 09/02/2008: 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: 10/11/1988. 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

P. G. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

022.296 · 03/05/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

10/11/1988

RPI 938

Pedido de patente depositado

#2.1

06/28/1988

RPI 923

Carta-patente expirada

#21.1

Patente extinta em 03/03/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

04/30/1996

RPI 1326

9.1.3

10/31/1995

RPI 1300

Deferimento

#9.1

06/06/1995

RPI 1279

Exigência - art. 36 da LPI

#6.1

01/25/1994

RPI 1208

14.1

08/03/1993

RPI 1183

Solicitação de exame técnico

#4.1

12/18/1990

RPI 1046

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