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Official data from INPI

PROCESSO PARA PREPARAÇÃO DE UMA DISPERSÃO AQUOSA DE POLIURETANO.

Em AnáliseInvention Patent

Application data

Number

PI8604816

Type

Invention Patent

Filing

10/03/1986

Publication

07/07/1987

Progress at the INPI

  1. Filing10/03/86
  2. Publication07/07/87
  3. Examination08/15/89
  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: 08/15/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Polyvinyl Chemicals Inc.

US

Zeneca, Inc.

US

Inventors

R. C. (pessoa física)

Technical data

IPC Classification

Priority claims

GB

8524579 · 10/04/1985

GB

8623573 · 10/01/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

08/15/1989

RPI 982

Publicação do pedido de patente

#3.1

07/07/1987

RPI 872

Pedido de patente depositado

#2.1

04/07/1987

RPI 859

Carta-patente expirada

#21.1

Patente extinta em 03/10/2001

07/22/2008

RPI 1959

20.4

06/20/1995

RPI 1281

Pedido de licença compulsória

#20.1

06/13/1995

RPI 1280

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

Republicação - classificação IPC

#15.11

09/15/1992

RPI 1137

Exigência - art. 36 da LPI

#6.1

09/24/1991

RPI 1086

6.2

08/07/1990

RPI 1027

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