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Official data from INPI

APERFEICOAMENTOS EM CILINDROS COM USO DE CHAVE DE CONSTRUCAO

Em AnáliseInvention Patent
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Application data

Number

PI7804987

Type

Invention Patent

Filing

08/02/1978

Publication

-
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Progress at the INPI

  1. Filing08/02/78
  2. Publication
  3. Examination
  4. Allowance11/03/82
  5. Grant09/06/83
  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.

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Latest action published by the INPI: 11/19/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

N. U. (pessoa física)

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Inventors

N. U. (pessoa física)

Technical data

IPC Classification

E05B 21/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

320

11/19/1985

RPI 787

300

06/18/1985

RPI 765

201

02/12/1985

RPI 747

Pedido de licença voluntária

#17.1

07/24/1984

RPI 718

Pedido de licença compulsória

#20.1

03/07/1984

RPI 698

Concessão da patente

#16.1

09/06/1983

RPI 672

Notificação para pagamento de retribuição

#13.1

03/15/1983

RPI 647

100

11/03/1982

RPI 628

Petição de recurso

#12.2

06/01/1982

RPI 606

Indeferimento

#9.2

02/09/1982

RPI 590

Carta-patente expirada

#21.1

12/14/1993

RPI 1202

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