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Official data from INPI

PROCESSO PARA PREPARAR UMA DISPERSÃO AQUOSA DE POLÍMERO DE ACRILATO

PublicadaInvention Patent

Application data

Number

PI8901269

Type

Invention Patent

Filing

03/20/1989

Publication

11/07/1989

Progress at the INPI

  1. Filing03/20/89
  2. Publication11/07/89
  3. Examination09/10/91
  4. Allowance11/14/95
  5. Grant07/30/96
  6. Expired12/15/09

The letters patent expired on 12/15/2009: 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: 11/07/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Cerestar Holding BV

NL

Cerrestar Holding B V

NL

Inventors

F. K. (pessoa física)

DE

R. K. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

GB

8806692 · 03/21/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

11/07/1989

RPI 994

Pedido de patente depositado

#2.1

05/09/1989

RPI 968

Carta-patente expirada

#21.1

Patente extinta em 20/03/2004

12/15/2009

RPI 2032

Concessão da patente

#16.1

07/30/1996

RPI 1339

Notificação para pagamento de retribuição

#13.1

03/19/1996

RPI 1320

Deferimento

#9.1

11/14/1995

RPI 1302

Exigência - art. 36 da LPI

#6.1

09/27/1994

RPI 1243

Solicitação de exame técnico

#4.1

09/10/1991

RPI 1084

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