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Official data from INPI

CABEÇOTE DE COEXTRUSÃO E PROCESSO DE COEXTRUSÃO

Em AnáliseInvention Patent

Application data

Number

PI8600513

Type

Invention Patent

Filing

02/06/1986

Publication

10/21/1986

Progress at the INPI

  1. Filing02/06/86
  2. Publication10/21/86
  3. Examination02/17/87
  4. Allowance11/17/92
  5. Grant05/25/93
  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: 02/17/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Firestone Tire & Rubber Company

US

See this company's full portfolio

Inventors

D. T. (pessoa física)

US

R. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

704.243 · 02/22/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

02/17/1987

RPI 852

Publicação do pedido de patente

#3.1

10/21/1986

RPI 835

Pedido de patente depositado

#2.1

07/29/1986

RPI 823

Carta-patente expirada

#21.1

Patente extinta em 06/02/2001

07/22/2008

RPI 1959

20.4

11/08/1994

RPI 1249

Concessão da patente

#16.1

05/25/1993

RPI 1173

Notificação para pagamento de retribuição

#13.1

04/06/1993

RPI 1166

Deferimento

#9.1

11/17/1992

RPI 1146

Exigência - art. 36 da LPI

#6.1

01/28/1992

RPI 1104

6.2

01/02/1990

RPI 1000

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