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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI7705681

Type

Invention Patent

Filing

08/26/1977

Publication

-

Progress at the INPI

  1. Filing08/26/77
  2. Publication
  3. Examination
  4. Allowance
  5. Grant11/30/82
  6. Expired08/19/08

The letters patent expired on 08/19/2008: 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: 11/30/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

GEORGETOWN STEEL CORP

Inventors

C. M. (pessoa física)

D. W. (pessoa física)

H. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/30/1982

RPI 632

Notificação para pagamento de retribuição

#13.1

09/08/1982

RPI 620

8.1

05/18/1982

RPI 604

15.0

11/24/1981

RPI 579

Exigência - art. 36 da LPI

#6.1

10/13/1981

RPI 573

Carta-patente expirada

#21.1

Patente extinta em 26/08/92

08/19/2008

RPI 1963

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