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Official data from INPI

COMPOSICAO DE RESINA TERMOPLASTICA PARA FABRICACAO DE PRODUTOS EXPANDIDOS ARTIGO EXPANDIDO DE UMA RESINA DE POLIOLEFINA E PROCESSO PARA EXPANDIR UMA RESINA SINTETICA TERMOPLASTICA

Em AnáliseInvention Patent

Application data

Number

PI7806971

Type

Invention Patent

Filing

12/23/1977

Publication

-

Progress at the INPI

  1. Filing12/23/77
  2. Publication
  3. Examination
  4. Allowance03/01/83
  5. Grant08/30/83
  6. Expired05/24/94

The letters patent expired on 05/24/1994: 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: 12/06/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ASAHI DOW LTD

Inventors

M. Y. (pessoa física)

W. S. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

12/06/1983

RPI 685

Concessão da patente

#16.1

08/30/1983

RPI 671

Notificação para pagamento de retribuição

#13.1

06/21/1983

RPI 661

Deferimento

#9.1

03/01/1983

RPI 645

6.2

12/22/1981

RPI 583

Carta-patente expirada

#21.1

05/24/1994

RPI 1225

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