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Official data from INPI

APERFEIÇOAMENTO EM PROCESSO DE OBTENÇÃO DO ÁCIDO HÚMICO.

Em AnáliseInvention Patent
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Application data

Number

PI7905472

Type

Invention Patent

Filing

08/27/1979

Publication

-
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Progress at the INPI

  1. Filing08/27/79
  2. Publication
  3. Examination
  4. Allowance01/15/85
  5. Grant07/30/85
  6. Expired04/25/95

The letters patent expired on 04/25/1995: 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: 09/19/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

AGRO-HUMUS IND E COM DE ADUBOS ORGÂNICOS LTDA

Inventors

Y. N. (pessoa física)

Technical data

IPC Classification

C05F 11/02

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Cessão de direito de exploração

#22.1

09/19/1989

RPI 987

20.7

05/27/1986

RPI 814

Concessão da patente

#16.1

07/30/1985

RPI 771

Notificação para pagamento de retribuição

#13.1

05/07/1985

RPI 759

Deferimento

#9.1

01/15/1985

RPI 743

Exigência - art. 36 da LPI

#6.1

08/07/1984

RPI 720

Conhecimento de parecer técnico

#7.1

01/03/1984

RPI 689

Carta-patente expirada

#21.1

04/25/1995

RPI 1273

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