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Official data from INPI

ELETRODO PARA USINAGEM POR CENTELHAMENTO EROSIVO

Concessão AnuladaInvention Patent

Application data

Number

PI7901209

Type

Invention Patent

Filing

05/05/1978

Publication

-

Progress at the INPI

  1. Filing05/05/78
  2. Publication
  3. Examination
  4. Allowance02/08/83
  5. Grant09/27/83
  6. Expired05/31/94

The letters patent expired on 05/31/1994: 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: 12/13/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

CHARMILLES SA ATELIERS

Inventors

B. F. (pessoa física)

C. D. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

16.3

12/13/1983

RPI 686

Concessão da patente

#16.1

09/27/1983

RPI 675

Notificação para pagamento de retribuição

#13.1

06/07/1983

RPI 659

Deferimento

#9.1

02/08/1983

RPI 642

15.0

06/22/1982

RPI 609

Exigência - art. 36 da LPI

#6.1

06/08/1982

RPI 607

Carta-patente expirada

#21.1

05/31/1994

RPI 1226

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