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Official data from INPI

COMPOSIÇÃO ISOLANTE RETARDANTE DE CHAMA.

PublicadaInvention Patent

Application data

Number

PI8605782

Type

Invention Patent

Filing

11/25/1986

Publication

08/25/1987

Progress at the INPI

  1. Filing11/25/86
  2. Publication08/25/87
  3. Examination02/01/90
  4. Allowance04/27/93
  5. Grant10/26/93
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 08/25/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappij B.V

NL

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Inventors

L. D. (pessoa física)

US

R. I. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

802797 · 11/27/1985

US

802806 · 11/27/1985

US

814705 · 12/30/1985

US

814706 · 12/30/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

08/25/1987

RPI 879

Pedido de patente depositado

#2.1

04/14/1987

RPI 860

Carta-patente expirada

#21.1

Patente extinta em 25/11/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

10/26/1993

RPI 1195

Notificação para pagamento de retribuição

#13.1

08/24/1993

RPI 1186

Deferimento

#9.1

04/27/1993

RPI 1169

Exigência - art. 36 da LPI

#6.1

11/19/1991

RPI 1094

Solicitação de exame técnico

#4.1

02/01/1990

RPI 1004

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