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Official data from INPI

UMA COMPOSIÇÃO POLIMÉRICA EXPANSÍVEL E UM PROCESSO PARA A PREPARAÇÀO DE UMA ESPUMA POLIMÉRICA

Em AnáliseInvention Patent

Application data

Number

PI8600469

Type

Invention Patent

Filing

01/22/1986

Publication

12/30/1986

Progress at the INPI

  1. Filing01/22/86
  2. Publication12/30/86
  3. Examination10/18/88
  4. Allowance06/18/91
  5. Grant04/28/92
  6. Terminated06/18/96

The patent was granted on 04/28/1992 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 10/18/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Dow Chemical Company

US

See this company's full portfolio

Inventors

C. P. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

725.036 · 04/19/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

10/18/1988

RPI 939

Publicação do pedido de patente

#3.1

12/30/1986

RPI 845

Pedido de patente depositado

#2.1

07/29/1986

RPI 823

Anuidade - prazo legal encerrado

#18.2

06/18/1996

RPI 1333

Concessão da patente

#16.1

04/28/1992

RPI 1117

Notificação para pagamento de retribuição

#13.1

10/15/1991

RPI 1089

Deferimento

#9.1

06/18/1991

RPI 1072

Exigência - art. 36 da LPI

#6.1

11/20/1990

RPI 1042

6.2

01/02/1990

RPI 1000

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