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Official data from INPI

"ESTRUTURA DE POLÍMERO MICROPOROSA , E PROCESSO PARA SUA PREPARAÇÃO .

ConcedidaInvention Patent

Application data

Number

PI7705790

Type

Invention Patent

Filing

08/30/1977

Publication

-

Progress at the INPI

  1. Filing08/30/77
  2. Publication
  3. Examination
  4. Allowance05/07/85
  5. Grant11/26/85
  6. Expired07/13/93

The letters patent expired on 07/13/1993: 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: 11/26/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A. I. (pessoa física)

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Inventors

C. A. (pessoa física)

Technical data

IPC Classification

Priority claims

US

P: . 718. 549 · 08/30/1976

US

P:.814.351 · 07/11/1977

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/26/1985

RPI 788

Notificação para pagamento de retribuição

#13.1

08/27/1985

RPI 775

Deferimento

#9.1

05/07/1985

RPI 759

Exigência - art. 36 da LPI

#6.1

10/16/1984

RPI 730

Exigência - art. 36 da LPI

#6.1

02/07/1984

RPI 694

14.1

12/07/1982

RPI 633

6.2

12/29/1981

RPI 584

Carta-patente expirada

#21.1

07/13/1993

RPI 1180

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