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Official data from INPI

PROCESSO DE POLIMERIZAÇÃO EM MICROSSUSPENSÃO PARA A PRODUÇÃO DE HOMOPOLÍMEROS E COPOLÍMEROS DE CLORETO DE VINILA

Em AnáliseInvention Patent

Application data

Number

PI8603162

Type

Invention Patent

Filing

07/07/1986

Publication

03/17/1987

Progress at the INPI

  1. Filing07/07/86
  2. Publication03/17/87
  3. Examination06/06/89
  4. Allowance08/04/92
  5. Grant04/27/93
  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: 06/06/1989. 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

R. M. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

754.559 · 07/12/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

06/06/1989

RPI 972

Publicação do pedido de patente

#3.1

03/17/1987

RPI 856

Pedido de patente depositado

#2.1

02/24/1987

RPI 853

Carta-patente expirada

#21.1

Patente extinta em 07/07/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

04/27/1993

RPI 1169

Notificação para pagamento de retribuição

#13.1

12/29/1992

RPI 1152

Deferimento

#9.1

08/04/1992

RPI 1131

Exigência - art. 36 da LPI

#6.1

06/18/1991

RPI 1072

6.2

01/02/1990

RPI 1000

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