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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8102642

Type

Invention Patent

Filing

04/29/1981

Publication

-

Progress at the INPI

  1. Filing04/29/81
  2. Publication
  3. Examination06/07/83
  4. Allowance03/05/85
  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

Tecnosolo - Engenharia e Tecnologia de Solos e Materiais S.A.

RJ, BR

Inventors

C. D. (pessoa física)

Technical data

IPC Classification

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

07/08/1986

RPI 820

110

04/01/1986

RPI 806

15.15

01/07/1986

RPI 794

Recurso

#12.1

06/25/1985

RPI 766

Deferimento

#9.1

03/05/1985

RPI 750

Conhecimento de parecer técnico

#7.1

08/07/1984

RPI 720

Solicitação de exame técnico

#4.1

06/07/1983

RPI 659

Carta-patente expirada

#21.1

10/01/1996

RPI 1348

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