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Official data from INPI

SUBSTRATO REVESTIDO TENDO UM REVESTIMENTO HIDROFILO DE BAIXO COEFICIENTE DE ATRITO E UM PROCESSO DE FAZER O MESMO

ConcedidaInvention Patent

Application data

Number

PI7805057

Type

Invention Patent

Filing

08/08/1977

Publication

-

Progress at the INPI

  1. Filing08/08/77
  2. Publication
  3. Examination
  4. Allowance07/12/83
  5. Grant03/27/84
  6. Expired12/14/93

The letters patent expired on 12/14/1993: 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: 03/27/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

B. P. (pessoa física)

Inventors

M. M. (pessoa física)

O. D. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/27/1984

RPI 701

14.1

01/10/1984

RPI 690

Notificação para pagamento de retribuição

#13.1

11/08/1983

RPI 681

Deferimento

#9.1

07/12/1983

RPI 664

Exigência - art. 36 da LPI

#6.1

09/14/1982

RPI 621

6.2

10/13/1981

RPI 573

Carta-patente expirada

#21.1

12/14/1993

RPI 1202

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