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Official data from INPI

PROCESSO PARA REMOCAO DE DEPOSITOS METALICOS DA SUPER ESTRUTURA DE UMA CAMARA PARA FLUTUACAO DE VIDRO

Em AnáliseInvention Patent

Application data

Number

PI7700849

Type

Invention Patent

Filing

02/13/1976

Publication

-

Progress at the INPI

  1. Filing02/13/76
  2. Publication
  3. Examination
  4. Allowance11/17/81
  5. Grant08/31/82
  6. Expired07/27/93

The letters patent expired on 07/27/1993: 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: 12/04/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

LIBBEY OWENS FORD CO

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Inventors

S. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Cessão de direito de exploração

#22.1

12/04/1984

RPI 737

Concessão da patente

#16.1

08/31/1982

RPI 619

Notificação para pagamento de retribuição

#13.1

03/23/1982

RPI 596

Deferimento

#9.1

11/17/1981

RPI 578

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

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