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Official data from INPI

PROCESSO PARA A PREPARAÇÃO CONTÍNUA DE POLIISOCIANATOS COM ESTRUTURA DE BIURETO

PublicadaInvention Patent
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Application data

Number

PI8800021

Type

Invention Patent

Filing

01/06/1988

Publication

08/02/1988
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Progress at the INPI

  1. Filing01/06/88
  2. Publication08/02/88
  3. Examination11/13/90
  4. Allowance07/18/95
  5. Grant03/26/96
  6. Expired09/02/08

The letters patent expired on 09/02/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 08/02/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

B. A. (pessoa física)

DE

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Inventors

D. W. (pessoa física)

DE

D. P. (pessoa física)

DE

D. K. (pessoa física)

DE

Technical data

IPC Classification

C08G 18/18C08G 18/32

Priority claims

DE

P 37 00 209.0 · 01/07/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

08/02/1988

RPI 928

Pedido de patente depositado

#2.1

05/03/1988

RPI 915

Carta-patente expirada

#21.1

Patente extinta em 06/01/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

03/26/1996

RPI 1321

Notificação para pagamento de retribuição

#13.1

11/28/1995

RPI 1304

Deferimento

#9.1

07/18/1995

RPI 1285

Exigência - art. 36 da LPI

#6.1

02/22/1994

RPI 1212

Solicitação de exame técnico

#4.1

11/13/1990

RPI 1041

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