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Official data from INPI

BENEFICIAMENTO MAGNÉTICO DE ARGILAS UTILIZANDO FLOTAÇÃO E SEMEADURA MAGNÉTICA.

ConcedidaInvention Patent

Application data

Number

PI8108757

Type

Invention Patent

Filing

08/25/1981

Publication

07/06/1982

Progress at the INPI

  1. Filing08/25/81
  2. Publication07/06/82
  3. Examination09/28/82
  4. Allowance07/14/87
  5. Grant12/29/87
  6. In force08/25/01

The patent was granted on 12/29/1987 and is in force until 08/25/2001. Until then, no one may make, use or sell the invention in Brazil without the owner's authorisation.

Protection valid until:08/25/2001

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Latest action published by the INPI: 12/29/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A. C. (pessoa física)

US

Inventors

C. L. (pessoa física)

C. A. (pessoa física)

Technical data

IPC Classification

Priority claims

US

180.976 · 08/25/1980

US

81/01138 · 08/25/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/29/1987

RPI 897

Notificação para pagamento de retribuição

#13.1

11/10/1987

RPI 890

Deferimento

#9.1

07/14/1987

RPI 873

Conhecimento de parecer técnico

#7.1

12/24/1985

RPI 792

Exigência - art. 36 da LPI

#6.1

12/04/1984

RPI 737

Solicitação de exame técnico

#4.1

09/28/1982

RPI 623

Notificação de entrada na fase nacional - PCT

#1.3

07/06/1982

RPI 611

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