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Official data from INPI

BROCA ANULAR.

ConcedidaInvention Patent

Application data

Number

PI8103193

Type

Invention Patent

Filing

05/22/1981

Publication

08/24/1982

Progress at the INPI

  1. Filing05/22/81
  2. Publication08/24/82
  3. Examination06/05/84
  4. Allowance01/15/85
  5. Grant08/27/85
  6. Expired10/01/96

The letters patent expired on 10/01/1996: 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: 08/27/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

E. H. (pessoa física)

US

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Inventors

H. D. (pessoa física)

Technical data

IPC Classification

Priority claims

US

170,959 · 07/21/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/27/1985

RPI 775

Notificação para pagamento de retribuição

#13.1

05/07/1985

RPI 759

Deferimento

#9.1

01/15/1985

RPI 743

Solicitação de exame técnico

#4.1

06/05/1984

RPI 711

Publicação do pedido de patente

#3.1

08/24/1982

RPI 618

Carta-patente expirada

#21.1

10/01/1996

RPI 1348

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