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Official data from INPI

PROCESSO DE PREPARAÇÃO DE FERTILIZANTE À PARTIR DA NEUTRALIZAÇÃO MÚTUA ENTRE LIXÍVIA E VINHOTO

Arquivada/ExtintaInvention Patent

Application data

Number

PI9003290

Type

Invention Patent

Filing

07/04/1990

Publication

01/28/1992

Progress at the INPI

  1. Filing07/04/90
  2. Publication01/28/92
  3. Examination05/26/92
  4. Allowance12/15/98
  5. Grant06/01/99
  6. Expired01/22/13

The letters patent expired on 01/22/2013: 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: 01/22/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Universidade de São Paulo - USP

SP, BR

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Inventors

L. F. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 04/07/2010

01/22/2013

RPI 2194

Concessão da patente

#16.1

06/01/1999

RPI 1482

Deferimento

#9.1

12/15/1998

RPI 1458

Exigência - art. 36 da LPI

#6.1

07/28/1998

RPI 1440

Conhecimento de parecer técnico

#7.1

05/27/1997

RPI 1382

Solicitação de exame técnico

#4.1

05/26/1992

RPI 1121

Publicação do pedido de patente

#3.1

01/28/1992

RPI 1104

Pedido de patente depositado

#2.1

01/08/1991

RPI 1049

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