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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI7407521

Type

Invention Patent

Filing

09/10/1974

Publication

-

Progress at the INPI

  1. Filing09/10/74
  2. Publication
  3. Examination
  4. Allowance
  5. Grant04/14/81
  6. Expired11/24/92

The letters patent expired on 11/24/1992: 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: 04/14/1981. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Oliver Tire & Rubber Company

US

Inventors

E. B. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/14/1981

RPI 547

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: B29H 5/04; B29H 17/36.

03/20/2018

RPI 2463

Carta-patente expirada

#21.1

11/24/1992

RPI 1147

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