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Official data from INPI

COMPOSIÇÃO DE AGENTE DE EXPANSÃO UTILIZADA PARA A EXPANSÃO DE POLÍMEROS EXPANSSÍVEIS POR GÁS

ConcedidaInvention Patent

Application data

Number

PI8404116

Type

Invention Patent

Filing

08/17/1984

Publication

07/16/1985

Progress at the INPI

  1. Filing08/17/84
  2. Publication07/16/85
  3. Examination09/01/87
  4. Allowance05/09/89
  5. Grant11/28/89
  6. Expired07/08/08

The letters patent expired on 07/08/2008: 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: 11/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Uniroyal, Inc.

US

See this company's full portfolio

Inventors

B. H. (pessoa física)

US

Technical data

Priority claims

US

524.945 · 08/22/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/28/1989

RPI 997

Notificação para pagamento de retribuição

#13.1

09/05/1989

RPI 985

Deferimento

#9.1

05/09/1989

RPI 968

Exigência - art. 36 da LPI

#6.1

10/18/1988

RPI 939

Solicitação de exame técnico

#4.1

09/01/1987

RPI 880

Publicação do pedido de patente

#3.1

07/16/1985

RPI 769

Pedido de patente depositado

#2.1

10/16/1984

RPI 730

Carta-patente expirada

#21.1

Patente extinta em 17/08/99

07/08/2008

RPI 1957

Pedido de licença compulsória

#20.1

04/16/1991

RPI 1063

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