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Official data from INPI

PROCESSO DE PREPARAÇÃO DE POLIDIORGANOSSILOXANO COM EXTREMIDADES SILANOL

PublicadaInvention Patent

Application data

Number

PI8801406

Type

Invention Patent

Filing

03/28/1988

Publication

11/01/1988

Progress at the INPI

  1. Filing03/28/88
  2. Publication11/01/88
  3. Examination10/16/90
  4. Allowance11/03/93
  5. Grant05/31/94
  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: 11/01/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

R. B. (pessoa física)

FR

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Inventors

J. L. (pessoa física)

FR

L. B. (pessoa física)

FR

Technical data

Priority claims

FR

87 05645 · 04/16/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

11/01/1988

RPI 941

Pedido de patente depositado

#2.1

07/26/1988

RPI 927

Carta-patente expirada

#21.1

Patente extinta em 28/03/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

05/31/1994

RPI 1226

Deferimento

#9.1

11/03/1993

RPI 1196

Exigência - art. 36 da LPI

#6.1

05/19/1992

RPI 1120

Solicitação de exame técnico

#4.1

10/16/1990

RPI 1037

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