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Official data from INPI

PROCESSO DE PREPARAÇÃO DE UM DIORGANOPOLISSILOXANO LINEAR, E, COMPOSIÇÃO DE POLISSILOXANO MONOCOMPONENTE

Arquivada/ExtintaInvention Patent

Application data

Number

PI8905608

Type

Invention Patent

Filing

11/01/1989

Publication

05/29/1990

Progress at the INPI

  1. Filing11/01/89
  2. Publication05/29/90
  3. Examination08/18/92
  4. Allowance03/19/96
  5. Grant12/31/96
  6. Expired12/29/09

The letters patent expired on 12/29/2009: 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: 12/29/2009. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

R. C. (pessoa física)

FR

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Inventors

G. N. (pessoa física)

FR

M. L. (pessoa física)

FR

R. C. (pessoa física)

FR

Technical data

IPC Classification

Priority claims

FR

88 15312 · 11/04/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 01/11/2004

12/29/2009

RPI 2034

Concessão da patente

#16.1

12/31/1996

RPI 1361

Deferimento

#9.1

03/19/1996

RPI 1320

Exigência - art. 36 da LPI

#6.1

08/01/1995

RPI 1287

Solicitação de exame técnico

#4.1

08/18/1992

RPI 1133

Publicação do pedido de patente

#3.1

05/29/1990

RPI 1020

Pedido de patente depositado

#2.1

03/06/1990

RPI 1008

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