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Official data from INPI

COMPOSIÇÃO RETICULANTE, COMPOSIÇÃO À BASE DE POLIOLPOLIÉTERES DE ELEVADO PESO MOLECULAR, DE ALTA REATIVIDADE E AGENTES RETICULANTES

ConcedidaInvention Patent
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Application data

Number

PI8306762

Type

Invention Patent

Filing

12/08/1983

Publication

08/28/1984
View on INPI

Progress at the INPI

  1. Filing12/08/83
  2. Publication08/28/84
  3. Examination11/13/84
  4. Allowance03/07/89
  5. Grant09/26/89
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Dow Química S/A

SP, BR

Inventors

A. N. (pessoa física)

BR

Technical data

IPC Classification

C08G 18/66

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/26/1989

RPI 988

Notificação para pagamento de retribuição

#13.1

07/11/1989

RPI 977

Deferimento

#9.1

03/07/1989

RPI 959

Exigência - art. 36 da LPI

#6.1

07/19/1988

RPI 926

Exigência - art. 36 da LPI

#6.1

12/15/1987

RPI 895

Solicitação de exame técnico

#4.1

11/13/1984

RPI 734

Publicação antecipada

#3.2

08/28/1984

RPI 723

Pedido de patente depositado

#2.1

02/21/1984

RPI 696

Carta-patente expirada

#21.1

Patente extinta em 08/12/98

07/01/2008

RPI 1956

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