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Official data from INPI

DENTE DE ESCAVAÇÃO

ConcedidaInvention Patent

Application data

Number

PI8102233

Type

Invention Patent

Filing

04/13/1981

Publication

01/12/1982

Progress at the INPI

  1. Filing04/13/81
  2. Publication01/12/82
  3. Examination10/11/83
  4. Allowance03/25/86
  5. Grant09/30/86
  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.

Talk to a specialist

Latest action published by the INPI: 09/30/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

E. C. (pessoa física)

US

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Inventors

D. H. (pessoa física)

US

F. H. (pessoa física)

US

W. J. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

144.368 · 04/28/1980

US

235.771 · 02/25/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/30/1986

RPI 832

Notificação para pagamento de retribuição

#13.1

07/15/1986

RPI 821

Deferimento

#9.1

03/25/1986

RPI 805

Exigência - art. 36 da LPI

#6.1

04/30/1985

RPI 758

Conhecimento de parecer técnico

#7.1

07/03/1984

RPI 715

Solicitação de exame técnico

#4.1

10/11/1983

RPI 677

Publicação do pedido de patente

#3.1

01/12/1982

RPI 586

Carta-patente expirada

#21.1

10/01/1996

RPI 1348

20.4

11/27/1990

RPI 1043

Pedido de licença compulsória

#20.1

11/13/1990

RPI 1041

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