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1. Before 2009  (6,129)
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New Records 

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1. Patents  (263,047)
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Subject 

1. Metallurgy  (253,014)
2. Chemistry  (253,013)
3. Ferrous Or Non-Ferrous Alloys  (83,852)
4. Treatment Of Alloys Or Non-Ferrous Metals  (83,852)
5. Transporting  (72,681)
6. Performing Operations  (72,681)
7. Pretreatment Of Raw Materials  (72,506)
8. Production And Refining Of Metals  (72,506)
9. Peat  (58,039)
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11. Fuels  (58,039)
12. Technical Gases Containing Carbon Monoxide  (58,039)
13. Lubricants  (58,039)
14. Cracking Hydrocarbon Oils  (56,694)
15. Recovery Of Hydrocarbon Oils From Oil-Shale, Oil-Sand, Orgases  (56,694)
16. Mineral Waxes  (56,694)
17. Refining Mixtures Mainly Consisting Of Hydrocarbons  (56,694)
18. Reforming Of Naphtha  (56,694)
19. Apparatus Therefor  (55,184)
20. After-Treatment Of Single Crystals Or A Homogeneouspolycrystalline Material With Defined Structure  (51,007)
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Databases 

1. esp@cenet  (263,047)
2. DOAJ Directory of Open Access Journals  (25)
3. IngentaConnect Backfiles  (9)
4. ProQuest Central  (5)
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Language 

1. English  (205,165)
2. French  (2,439)
3. German  (4)
4. Spanish  (1)
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1. Academia Economic Papers  (2)
2. Cai Liao Gong Cheng = Journal Of Materials Engineering  (7)
3. Hang Kong Cai Liao Xue Bao  (3)
4. Huan Jing Ke Xue Yan Jiu  (2)
5. International Journal Of Business & Economics  (2)
6. International Journal Of Business And Economics  (2)
7. Kuangchan Zonghe Liyong  (4)
8. Nong Ye Gong Cheng Xue Bao  (2)
9. Shipin Gongye Ke-Ji  (3)
10. 矿产综合利用  (3)
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