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Official data from INPI

APERFEIÇOAMENTOS EM DISPOSITIVO SEMEADOR

ConcedidaInvention Patent

Application data

Number

PI8204877

Type

Invention Patent

Filing

08/18/1982

Publication

01/25/1983

Progress at the INPI

  1. Filing08/18/82
  2. Publication01/25/83
  3. Examination04/05/83
  4. Allowance11/13/84
  5. Grant04/29/86
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 04/29/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Marchesan Implementos e Máquinas Agrícolas "Tatu" S/A

SP, BR

See this company's full portfolio

Inventors

L. M. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/29/1986

RPI 810

110

11/05/1985

RPI 785

Recurso

#12.1

03/05/1985

RPI 750

Deferimento

#9.1

11/13/1984

RPI 734

Pedido de certificado de adição de invenção

#5.1

08/23/1983

RPI 670

Solicitação de exame técnico

#4.1

04/05/1983

RPI 650

Publicação antecipada

#3.2

01/25/1983

RPI 640

Carta-patente expirada

#21.1

Patente extinta em 18/08/97

07/01/2008

RPI 1956

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