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Official data from INPI

PRESSURIZAÇÃO E ESTOCAGEM DE ESPUMAS DE RESINA TERMOPLÁSTICA ANTES DA EXPRESSÃO SECUNDÁRIA

ConcedidaInvention Patent

Application data

Number

PI8206785

Type

Invention Patent

Filing

11/22/1982

Publication

06/26/1984

Progress at the INPI

  1. Filing11/22/82
  2. Publication06/26/84
  3. Examination08/12/86
  4. Allowance09/13/88
  5. Grant08/29/89
  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.

Talk to a specialist

Latest action published by the INPI: 08/29/1989. 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

L. R. (pessoa física)

US

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/29/1989

RPI 984

Notificação para pagamento de retribuição

#13.1

01/03/1989

RPI 950

Deferimento

#9.1

09/13/1988

RPI 934

Exigência - art. 36 da LPI

#6.1

03/29/1988

RPI 910

Solicitação de exame técnico

#4.1

08/12/1986

RPI 825

Publicação do pedido de patente

#3.1

06/26/1984

RPI 714

Pedido de patente depositado

#2.1

01/18/1983

RPI 639

Carta-patente expirada

#21.1

Patente extinta em 22/11/97

07/01/2008

RPI 1956

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