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Official data from INPI

PROCESSO PARA PREPARAR DIRETAMENTE FIBRAS DE 1,2-POLIBUTADIENO SINDIOTÁTICO.

PublicadaInvention Patent

Application data

Number

PI8700255

Type

Invention Patent

Filing

01/21/1987

Publication

12/08/1987

Progress at the INPI

  1. Filing01/21/87
  2. Publication12/08/87
  3. Examination08/07/90
  4. Allowance12/01/92
  5. Grant06/29/93
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 12/08/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Goodyear Tire & Rubber Company

US

See this company's full portfolio

Inventors

A. B. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

821.583 · 01/23/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

12/08/1987

RPI 894

Pedido de patente depositado

#2.1

05/26/1987

RPI 866

Carta-patente expirada

#21.1

Patente extinta em 21/01/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

06/29/1993

RPI 1178

Notificação para pagamento de retribuição

#13.1

04/20/1993

RPI 1168

Deferimento

#9.1

12/01/1992

RPI 1148

Exigência - art. 36 da LPI

#6.1

01/14/1992

RPI 1102

Solicitação de exame técnico

#4.1

08/07/1990

RPI 1027

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