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Official data from INPI

PROCESSO DE FABRICACAO DE ELEMENTOS DE CALEFACAO

Em AnáliseInvention Patent

Application data

Number

PI7602307

Type

Invention Patent

Filing

04/14/1976

Publication

-

Progress at the INPI

  1. Filing04/14/76
  2. Publication
  3. Examination
  4. Allowance
  5. Grant09/27/83
  6. Expired08/03/93

The letters patent expired on 08/03/1993: 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: 04/02/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

R. C. (pessoa física)

Inventors

R. C. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Cessão de direito de exploração

#22.1

04/02/1985

RPI 754

Cessão de direito de exploração

#22.1

11/06/1984

RPI 733

Concessão da patente

#16.1

09/27/1983

RPI 675

11.8

06/21/1983

RPI 661

11.8

06/14/1983

RPI 660

Arquivamento - Art. 38 §2° da LPI

#11.4

02/22/1983

RPI 644

Carta-patente expirada

#21.1

08/03/1993

RPI 1183

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